{"id":188,"date":"2023-04-01T12:23:18","date_gmt":"2023-04-01T12:23:18","guid":{"rendered":"http:\/\/localhost\/solvefor2\/?p=188"},"modified":"2023-04-01T12:06:43","modified_gmt":"2023-04-01T12:06:43","slug":"physics-1-form-four-mock-examination-2021-busega-district","status":"publish","type":"post","link":"https:\/\/edu.co.tz\/notes\/physics-1-form-four-mock-examination-2021-busega-district\/","title":{"rendered":"PHYSICS-1 FORM FOUR MOCK EXAMINATION 2021 BUSEGA DISTRICT"},"content":{"rendered":"<p style=\"text-align: center\"><span style=\"font-family:Times New Roman; font-size:12pt\"><strong>THE UNITED REPUBLIC OF TANZANIA<br \/>\n<\/strong><\/span><\/p>\n<p style=\"text-align: center\"><span style=\"font-family:Times New Roman; font-size:12pt\"><strong>PRESIDENT&#8217;S OFFICE &#8211; REGIONAL ADMINISTRATION AND LOCAL GOVERNMENT<br \/>\n<\/strong><\/span><\/p>\n<p style=\"text-align: center\"><span style=\"font-family:Times New Roman; font-size:12pt\"><strong>BUSEGA DISTRICT COUNCIL<br \/>\n<\/strong><\/span><\/p>\n<p style=\"text-align: center\"><img decoding=\"async\" src=\"http:\/\/localhost\/solvefor2\/assets\/images\/kev3\/042222_0911_PHYSICS1FOR1.jpg\" alt=\"\"\/><span style=\"font-family:Times New Roman; font-size:12pt\"><strong><br \/>\n\t\t\t<\/strong><\/span><\/p>\n<p style=\"text-align: center\"><span style=\"font-family:Times New Roman; font-size:12pt\"><strong>FORM FOUR DISTRICTMOCK EXAMINATION<br \/>\n<\/strong><\/span><\/p>\n<p><span style=\"font-family:Times New Roman; font-size:12pt\"><strong>Code 031\/1                              PHYSICS-1<span style=\"text-decoration:underline\"><br \/>\n\t\t\t\t<\/span><\/strong><\/span><\/p>\n<p>\n\u00a0<\/p>\n<p><span style=\"font-family:Times New Roman; font-size:12pt\"><strong>TIME: 3 Hours. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0          FRIDAY, 28<sup>th<\/sup>MAY, 2021 A.M.<br \/>\n<\/strong><\/span><\/p>\n<p style=\"text-align: center\">\n\u00a0<\/p>\n<p style=\"text-align: center\"><span style=\"font-family:Times New Roman; font-size:12pt\"><strong>Instructions<br \/>\n<\/strong><\/span><\/p>\n<ol>\n<li><span style=\"font-family:Times New Roman; font-size:12pt\">This paper consists of section <strong>A, B<\/strong> and <strong>C.<\/strong><br \/>\n\t\t\t<\/span><\/li>\n<li><span style=\"font-family:Times New Roman; font-size:12pt\">Answer <strong>all<\/strong> questions in section <strong>A<\/strong> and <strong>B,<\/strong>and any<strong>Two(2)<\/strong>questions from section <strong>C.<\/strong><br \/>\n\t\t\t<\/span><\/li>\n<li><span style=\"font-family:Times New Roman; font-size:12pt\"><strong>Non programmable Calculators are allowed <\/strong>and cellular <strong>phones<\/strong> are <strong>not <\/strong>allowed in the examination room.<br \/>\n<\/span><\/li>\n<li><span style=\"font-family:Times New Roman; font-size:12pt\">Write <strong>Examination number<\/strong> on every page of your answer sheet(s).<br \/>\n<\/span><\/li>\n<li>\n<div><span style=\"font-family:Times New Roman; font-size:12pt\">Where necessary the following constants may be used:<br \/>\n<\/span><\/div>\n<ol style=\"margin-left: 72pt\">\n<li><span style=\"font-family:Times New Roman; font-size:12pt\">Acceleration due to gravity, g = 10m\/s<sup>2<\/sup><br \/>\n\t\t\t\t\t<\/span><\/li>\n<li><span style=\"font-family:Times New Roman; font-size:12pt\">Density of water = 1g\/cm<sup>3<\/sup> or 1000kg\/m<sup>3<\/sup><br \/>\n\t\t\t\t\t<\/span><\/li>\n<li><span style=\"font-family:Times New Roman; font-size:12pt\">Density of gold = 19.3g\/cm<sup>3<\/sup><br \/>\n\t\t\t\t\t<\/span><\/li>\n<li><span style=\"font-family:Times New Roman; font-size:12pt\">Density of silver = 10.5g\/cm<sup>3<\/sup><br \/>\n\t\t\t\t\t<\/span><\/li>\n<\/ol>\n<p style=\"text-align: center\"><span style=\"font-family:Times New Roman; font-size:12pt\"><strong>SECTION A: (15 Marks)<br \/>\n<\/strong><\/span><\/p>\n<p style=\"text-align: center\"><span style=\"font-family:Times New Roman; font-size:12pt\">Answer <strong>all<\/strong> questions from this section<br \/>\n<\/span><\/p>\n<p style=\"text-align: center\">\n\u00a0<\/p>\n<\/li>\n<li>\n<div style=\"text-align: justify\"><span style=\"font-family:Times New Roman; font-size:12pt\">For each of the items (i)-(x), choose the correct answer from among the given alternatives and write its letter beside the item number in the answer sheet(s) provided.<br \/>\n<\/span><\/div>\n<ol style=\"margin-left: 54pt\">\n<li>\n<div style=\"text-align: justify\"><span style=\"font-family:Times New Roman; font-size:12pt\">The SI unit of moment is;<br \/>\n<\/span><\/div>\n<ol>\n<li>\n<div style=\"text-align: justify\"><span style=\"font-family:Times New Roman; font-size:12pt\">Ns<br \/>\n<\/span><\/div>\n<\/li>\n<li>\n<div style=\"text-align: justify\"><span style=\"font-family:Times New Roman; font-size:12pt\">Kgm\/s<br \/>\n<\/span><\/div>\n<\/li>\n<li>\n<div style=\"text-align: justify\"><span style=\"font-family:Times New Roman; font-size:12pt\">JS<br \/>\n<\/span><\/div>\n<\/li>\n<li>\n<div style=\"text-align: justify\"><span style=\"font-family:Times New Roman; font-size:12pt\">Nm<br \/>\n<\/span><\/div>\n<\/li>\n<\/ol>\n<\/li>\n<li>\n<div style=\"text-align: justify\"><span style=\"font-family:Times New Roman; font-size:12pt\">Potential and kinetic energy are similar in that<br \/>\n<\/span><\/div>\n<ol>\n<li>\n<div style=\"text-align: justify\"><span style=\"font-family:Times New Roman; font-size:12pt\">Both produce heat<br \/>\n<\/span><\/div>\n<\/li>\n<li>\n<div style=\"text-align: justify\"><span style=\"font-family:Times New Roman; font-size:12pt\">Both are measured in watts<br \/>\n<\/span><\/div>\n<\/li>\n<li>\n<div style=\"text-align: justify\"><span style=\"font-family:Times New Roman; font-size:12pt\">One is substitute of the other<br \/>\n<\/span><\/div>\n<\/li>\n<li>\n<div style=\"text-align: justify\"><span style=\"font-family:Times New Roman; font-size:12pt\">Both are forms of mechanical energy<br \/>\n<\/span><\/div>\n<\/li>\n<\/ol>\n<\/li>\n<li>\n<div style=\"text-align: justify\"><span style=\"font-family:Times New Roman; font-size:12pt\">The difference between scalar and vector quantity is that:<br \/>\n<\/span><\/div>\n<ol>\n<li>\n<div style=\"text-align: justify\"><span style=\"font-family:Times New Roman; font-size:12pt\">A vector has magnitude only<br \/>\n<\/span><\/div>\n<\/li>\n<li>\n<div style=\"text-align: justify\"><span style=\"font-family:Times New Roman; font-size:12pt\">A Scalar has magnitude and direction<br \/>\n<\/span><\/div>\n<\/li>\n<li>\n<div style=\"text-align: justify\"><span style=\"font-family:Times New Roman; font-size:12pt\"> A vector has magnitude and direction while the scalar has magnitude only<br \/>\n<\/span><\/div>\n<\/li>\n<li>\n<div style=\"text-align: justify\"><span style=\"font-family:Times New Roman; font-size:12pt\">All of the above mentioned are correct answers.<br \/>\n<\/span><\/div>\n<\/li>\n<\/ol>\n<\/li>\n<li>\n<div style=\"text-align: justify\"><span style=\"font-family:Times New Roman; font-size:12pt\">A spectrum is formed when the image of the slit do not overlap is called;<br \/>\n<\/span><\/div>\n<ol>\n<li>\n<div style=\"text-align: justify\"><span style=\"font-family:Times New Roman; font-size:12pt\"> Impure spectrum<br \/>\n<\/span><\/div>\n<\/li>\n<li>\n<div style=\"text-align: justify\"><span style=\"font-family:Times New Roman; font-size:12pt\"> Pure spectrum<br \/>\n<\/span><\/div>\n<\/li>\n<li>\n<div style=\"text-align: justify\"><span style=\"font-family:Times New Roman; font-size:12pt\">Invisible spectrum<br \/>\n<\/span><\/div>\n<\/li>\n<li>\n<div style=\"text-align: justify\"><span style=\"font-family:Times New Roman; font-size:12pt\"> Color mixing<br \/>\n<\/span><\/div>\n<\/li>\n<\/ol>\n<\/li>\n<li>\n<div style=\"text-align: justify\"><span style=\"font-family:Times New Roman; font-size:12pt\">A can of mass 600kg accelerates from rest to 8m\/s in 40 second.  The resultant force acting on the car is<br \/>\n<\/span><\/div>\n<ol>\n<li>\n<div style=\"text-align: justify\"><span style=\"font-family:Times New Roman; font-size:12pt\">60N<br \/>\n<\/span><\/div>\n<\/li>\n<li>\n<div style=\"text-align: justify\"><span style=\"font-family:Times New Roman; font-size:12pt\">120N<br \/>\n<\/span><\/div>\n<\/li>\n<li>\n<div style=\"text-align: justify\"><span style=\"font-family:Times New Roman; font-size:12pt\">160N<br \/>\n<\/span><\/div>\n<\/li>\n<li>\n<div style=\"text-align: justify\"><span style=\"font-family:Times New Roman; font-size:12pt\"> 70N<br \/>\n<\/span><\/div>\n<\/li>\n<\/ol>\n<\/li>\n<li>\n<div style=\"text-align: justify\"><span style=\"font-family:Times New Roman; font-size:12pt\">The pressure of water in a dam is greater at the bottom which of the following is a reason as to why a dam has thick walls at bottom?<br \/>\n<\/span><\/div>\n<ol>\n<li>\n<div style=\"text-align: justify\"><span style=\"font-family:Times New Roman; font-size:12pt\">To counter-balance the pressure<br \/>\n<\/span><\/div>\n<\/li>\n<li>\n<div style=\"text-align: justify\"><span style=\"font-family:Times New Roman; font-size:12pt\">To accommodate more water<br \/>\n<\/span><\/div>\n<\/li>\n<li>\n<div style=\"text-align: justify\"><span style=\"font-family:Times New Roman; font-size:12pt\">To reduce energy generation<br \/>\n<\/span><\/div>\n<\/li>\n<li>\n<div style=\"text-align: justify\"><span style=\"font-family:Times New Roman; font-size:12pt\">None of the above<br \/>\n<\/span><\/div>\n<\/li>\n<\/ol>\n<\/li>\n<li>\n<div style=\"text-align: justify\"><span style=\"font-family:Times New Roman; font-size:12pt\">The use of vessels like aeroplanes, ships and cars is the application of physics in<br \/>\n<\/span><\/div>\n<ol>\n<li>\n<div style=\"text-align: justify\"><span style=\"font-family:Times New Roman; font-size:12pt\"> Communication<br \/>\n<\/span><\/div>\n<\/li>\n<li>\n<div style=\"text-align: justify\"><span style=\"font-family:Times New Roman; font-size:12pt\">Industry<br \/>\n<\/span><\/div>\n<\/li>\n<li>\n<div style=\"text-align: justify\"><span style=\"font-family:Times New Roman; font-size:12pt\">Entertainment<br \/>\n<\/span><\/div>\n<\/li>\n<li>\n<div style=\"text-align: justify\"><span style=\"font-family:Times New Roman; font-size:12pt\">Transport<br \/>\n<\/span><\/div>\n<\/li>\n<\/ol>\n<\/li>\n<li>\n<div style=\"text-align: justify\"><span style=\"font-family:Times New Roman; font-size:12pt\">The process of forming hydrogen bubbles around the copper plates of a cell is<br \/>\n<\/span><\/div>\n<ol>\n<li>\n<div style=\"text-align: justify\"><span style=\"font-family:Times New Roman; font-size:12pt\">Hydrogenation<br \/>\n<\/span><\/div>\n<\/li>\n<li>\n<div style=\"text-align: justify\"><span style=\"font-family:Times New Roman; font-size:12pt\">Local action<br \/>\n<\/span><\/div>\n<\/li>\n<li>\n<div style=\"text-align: justify\"><span style=\"font-family:Times New Roman; font-size:12pt\">Amalgamation<br \/>\n<\/span><\/div>\n<\/li>\n<li>\n<div style=\"text-align: justify\"><span style=\"font-family:Times New Roman; font-size:12pt\">Polarization<br \/>\n<\/span><\/div>\n<\/li>\n<\/ol>\n<\/li>\n<\/ol>\n<\/li>\n<\/ol>\n<p style=\"text-align: justify\">\n\u00a0<\/p>\n<p style=\"text-align: justify\">\n\u00a0<\/p>\n<p style=\"text-align: justify\">\n\u00a0<\/p>\n<ol style=\"margin-left: 90pt\">\n<li>\n<div style=\"text-align: justify\"><span style=\"font-family:Times New Roman; font-size:12pt\">Pond skaters and mosquitoes  are able to walk on surface of water because  of the<br \/>\n<\/span><\/div>\n<ol>\n<li>\n<div style=\"text-align: justify\"><span style=\"font-family:Times New Roman; font-size:12pt\">Density of water<br \/>\n<\/span><\/div>\n<\/li>\n<li>\n<div style=\"text-align: justify\"><span style=\"font-family:Times New Roman; font-size:12pt\">Upthrust of water<br \/>\n<\/span><\/div>\n<\/li>\n<li>\n<div style=\"text-align: justify\"><span style=\"font-family:Times New Roman; font-size:12pt\">Capillarity<br \/>\n<\/span><\/div>\n<\/li>\n<li>\n<div style=\"text-align: justify\"><span style=\"font-family:Times New Roman; font-size:12pt\">Surface tension<br \/>\n<\/span><\/div>\n<\/li>\n<\/ol>\n<\/li>\n<li>\n<div style=\"text-align: justify\"><span style=\"font-family:Times New Roman; font-size:12pt\">The shaving mirror is a typical  application  of a<br \/>\n<\/span><\/div>\n<ol>\n<li>\n<div style=\"text-align: justify\"><span style=\"font-family:Times New Roman; font-size:12pt\">Concave mirror<br \/>\n<\/span><\/div>\n<\/li>\n<li>\n<div style=\"text-align: justify\"><span style=\"font-family:Times New Roman; font-size:12pt\">Convex mirror<br \/>\n<\/span><\/div>\n<\/li>\n<li>\n<div style=\"text-align: justify\"><span style=\"font-family:Times New Roman; font-size:12pt\">Plane mirror<br \/>\n<\/span><\/div>\n<\/li>\n<li>\n<div style=\"text-align: justify\"><span style=\"font-family:Times New Roman; font-size:12pt\">Rotating mirror<br \/>\n<\/span><\/div>\n<p style=\"text-align: justify\">\n\u00a0<\/p>\n<\/li>\n<\/ol>\n<\/li>\n<\/ol>\n<ol>\n<li>\n<div style=\"text-align: justify\"><span style=\"font-family:Times New Roman; font-size:12pt\">Match the items in List A with the responses in List B by writing the letter of the correct response beside the item number in the answer sheet(s) provided.<br \/>\n<\/span><\/div>\n<p style=\"text-align: justify\">\n\u00a0<\/p>\n<div style=\"margin-left: 36pt\">\n<table style=\"border-collapse:collapse\" border=\"0\">\n<colgroup>\n<col style=\"width:369px\"\/>\n<col style=\"width:206px\"\/><\/colgroup>\n<tbody valign=\"top\">\n<tr>\n<td style=\"padding-left: 7px; padding-right: 7px; border-top:  solid black 0.5pt; border-left:  solid black 0.5pt; border-bottom:  solid black 0.5pt; border-right:  solid black 0.5pt\">\n<p style=\"text-align: center\"><span style=\"font-family:Times New Roman; font-size:12pt\"><strong>LIST    A<\/strong><\/span><\/p>\n<\/td>\n<td style=\"padding-left: 7px; padding-right: 7px; border-top:  solid black 0.5pt; border-left:  none; border-bottom:  solid black 0.5pt; border-right:  solid black 0.5pt\">\n<p style=\"text-align: center\"><span style=\"font-family:Times New Roman; font-size:12pt\"><strong>LIST  B<\/strong><\/span><\/p>\n<\/td>\n<\/tr>\n<tr style=\"height: 190px\">\n<td style=\"padding-left: 7px; padding-right: 7px; border-top:  none; border-left:  solid black 0.5pt; border-bottom:  solid black 0.5pt; border-right:  solid black 0.5pt\">\n<ol>\n<li>\n<div style=\"text-align: justify\"><span style=\"font-family:Times New Roman; font-size:12pt\">Occur in a circuit as result of changing current in the nearly circuit<br \/>\n<\/span><\/div>\n<\/li>\n<li>\n<div style=\"text-align: justify\"><span style=\"font-family:Times New Roman; font-size:12pt\">Applies when motion in conductor under magnetic field causes current<br \/>\n<\/span><\/div>\n<\/li>\n<li>\n<div style=\"text-align: justify\"><span style=\"font-family:Times New Roman; font-size:12pt\"> Parallel current in the same direction<br \/>\n<\/span><\/div>\n<\/li>\n<li>\n<div style=\"text-align: justify\"><span style=\"font-family:Times New Roman; font-size:12pt\">Parallel currents in opposite directions<br \/>\n<\/span><\/div>\n<\/li>\n<li>\n<div style=\"text-align: justify\"><span style=\"font-family:Times New Roman; font-size:12pt\">Applies when current carrying conductor in a magnetic field cause motion. <\/span><\/div>\n<\/li>\n<\/ol>\n<\/td>\n<td style=\"padding-left: 7px; padding-right: 7px; border-top:  none; border-left:  none; border-bottom:  solid black 0.5pt; border-right:  solid black 0.5pt\">\n<li>\n<div style=\"text-align: justify\"><span style=\"font-family:Times New Roman; font-size:12pt\"> Repulsive  force<br \/>\n<\/span><\/div>\n<\/li>\n<li>\n<div style=\"text-align: justify\"><span style=\"font-family:Times New Roman; font-size:12pt\">Dynamo rule<br \/>\n<\/span><\/div>\n<\/li>\n<li>\n<div style=\"text-align: justify\"><span style=\"font-family:Times New Roman; font-size:12pt\">Eddy current<br \/>\n<\/span><\/div>\n<\/li>\n<li>\n<div style=\"text-align: justify\"><span style=\"font-family:Times New Roman; font-size:12pt\">Attractive force<br \/>\n<\/span><\/div>\n<\/li>\n<li>\n<div style=\"text-align: justify\"><span style=\"font-family:Times New Roman; font-size:12pt\">Mutual induction<br \/>\n<\/span><\/div>\n<\/li>\n<li>\n<div style=\"text-align: justify\"><span style=\"font-family:Times New Roman; font-size:12pt\">Motor rule<br \/>\n<\/span><\/div>\n<\/li>\n<li>\n<div style=\"text-align: justify\"><span style=\"font-family:Times New Roman; font-size:12pt\">Self-induction<br \/>\n<\/span><\/div>\n<\/li>\n<li>\n<div style=\"text-align: justify\"><span style=\"font-family:Times New Roman; font-size:12pt\">Lenz&#8217;s law<br \/>\n<\/span><\/div>\n<\/li>\n<li>\n<div style=\"text-align: justify\"><span style=\"font-family:Times New Roman; font-size:12pt\">Faradays law<br \/>\n<\/span><\/div>\n<\/li>\n<li>\n<div style=\"text-align: justify\"><span style=\"font-family:Times New Roman; font-size:12pt\">Magnetic field.<\/span><\/div>\n<\/li>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p style=\"text-align: justify\">\n\u00a0<\/p>\n<\/li>\n<\/ol>\n<p>\n\u00a0<\/p>\n<p style=\"text-align: center\"><span style=\"font-family:Times New Roman; font-size:12pt\"><strong>SECTION B:  (60 Marks).<br \/>\n<\/strong><\/span><\/p>\n<p style=\"text-align: center\"><span style=\"font-family:Times New Roman; font-size:12pt\">Answer <strong>all<\/strong> questions from this section<br \/>\n<\/span><\/p>\n<p style=\"text-align: center\">\n\u00a0<\/p>\n<ol>\n<li>\n<div><span style=\"font-family:Times New Roman; font-size:12pt\">A small object was kicked vertically upwards from the ground with initial velocity of 40m\/s<br \/>\n<\/span><\/div>\n<p><span style=\"font-family:Times New Roman; font-size:12pt\">       (a) Sketch the displacement-time graph for the whole motion of the object until it reaches the ground. <strong>(4marks)<\/strong><br \/>\n\t\t\t\t<\/span><\/p>\n<p><span style=\"font-family:Times New Roman; font-size:12pt\">        (b) How high did the object moved? And how long will it take for the body to be in air?<strong>(6marks)<br \/>\n<\/strong><\/span><\/p>\n<\/li>\n<li>\n<div><span style=\"font-family:Times New Roman; font-size:12pt\">(a). (i) Define Pressure and State its SI unit<strong>(1 mark)<\/strong><br \/>\n\t\t\t\t<\/span><\/div>\n<p><span style=\"font-family:Times New Roman; font-size:12pt\">      (ii) State Pascal&#8217;s principle<strong>(1mark)<\/strong><br \/>\n\t\t\t\t<\/span><\/p>\n<p><span style=\"font-family:Times New Roman; font-size:12pt\">      (iii) Use figure 1 below to calculate the pressure of steam in the cylinder which would just raise the valve if the area of the valve in contact with the steam is 5cm<sup>2<\/sup>. Atmospheric pressure is 10<sup>5<\/sup>N\/m<sup>2<\/sup>.<br \/>\n<\/span><\/p>\n<p style=\"text-align: justify; margin-left: 36pt\"><img decoding=\"async\" src=\"http:\/\/localhost\/solvefor2\/assets\/images\/kev3\/042222_0911_PHYSICS1FOR2.png\" alt=\"\"\/><img decoding=\"async\" src=\"http:\/\/localhost\/solvefor2\/assets\/images\/kev3\/042222_0911_PHYSICS1FOR3.png\" alt=\"\"\/><img decoding=\"async\" src=\"http:\/\/localhost\/solvefor2\/assets\/images\/kev3\/042222_0911_PHYSICS1FOR4.png\" alt=\"\"\/><img decoding=\"async\" src=\"http:\/\/localhost\/solvefor2\/assets\/images\/kev3\/042222_0911_PHYSICS1FOR5.png\" alt=\"\"\/><img decoding=\"async\" src=\"http:\/\/localhost\/solvefor2\/assets\/images\/kev3\/042222_0911_PHYSICS1FOR6.png\" alt=\"\"\/><img decoding=\"async\" src=\"http:\/\/localhost\/solvefor2\/assets\/images\/kev3\/042222_0911_PHYSICS1FOR7.png\" alt=\"\"\/><img decoding=\"async\" src=\"http:\/\/localhost\/solvefor2\/assets\/images\/kev3\/042222_0911_PHYSICS1FOR8.png\" alt=\"\"\/><span style=\"font-family:Times New Roman; font-size:12pt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a020cm                 30cm<br \/>\n<\/span><\/p>\n<p><img decoding=\"async\" src=\"http:\/\/localhost\/solvefor2\/assets\/images\/kev3\/042222_0911_PHYSICS1FOR9.png\" alt=\"\"\/><img decoding=\"async\" src=\"http:\/\/localhost\/solvefor2\/assets\/images\/kev3\/042222_0911_PHYSICS1FOR10.png\" alt=\"\"\/><img decoding=\"async\" src=\"http:\/\/localhost\/solvefor2\/assets\/images\/kev3\/042222_0911_PHYSICS1FOR11.png\" alt=\"\"\/><img decoding=\"async\" src=\"http:\/\/localhost\/solvefor2\/assets\/images\/kev3\/042222_0911_PHYSICS1FOR12.png\" alt=\"\"\/><span style=\"font-family:Times New Roman; font-size:12pt\">\u00a0\u00a0\u00a0\u00a0Pivot<br \/>\n<\/span><\/p>\n<\/li>\n<\/ol>\n<p>\n\u00a0<\/p>\n<p style=\"text-align: center\"><img decoding=\"async\" src=\"http:\/\/localhost\/solvefor2\/assets\/images\/kev3\/042222_0911_PHYSICS1FOR13.png\" alt=\"\"\/><img decoding=\"async\" src=\"http:\/\/localhost\/solvefor2\/assets\/images\/kev3\/042222_0911_PHYSICS1FOR14.png\" alt=\"\"\/><img decoding=\"async\" src=\"http:\/\/localhost\/solvefor2\/assets\/images\/kev3\/042222_0911_PHYSICS1FOR15.png\" alt=\"\"\/><img decoding=\"async\" src=\"http:\/\/localhost\/solvefor2\/assets\/images\/kev3\/042222_0911_PHYSICS1FOR16.png\" alt=\"\"\/><img decoding=\"async\" src=\"http:\/\/localhost\/solvefor2\/assets\/images\/kev3\/042222_0911_PHYSICS1FOR17.png\" alt=\"\"\/><img decoding=\"async\" src=\"http:\/\/localhost\/solvefor2\/assets\/images\/kev3\/042222_0911_PHYSICS1FOR18.png\" alt=\"\"\/><span style=\"font-family:Times New Roman; font-size:12pt\"><br \/>\n\t\t<\/span><\/p>\n<p><span style=\"font-family:Times New Roman; font-size:12pt\">\u00a0\u00a0\u00a0\u00a0F<br \/>\n<\/span><\/p>\n<p><img decoding=\"async\" src=\"http:\/\/localhost\/solvefor2\/assets\/images\/kev3\/042222_0911_PHYSICS1FOR19.png\" alt=\"\"\/><img decoding=\"async\" src=\"http:\/\/localhost\/solvefor2\/assets\/images\/kev3\/042222_0911_PHYSICS1FOR20.png\" alt=\"\"\/><span style=\"font-family:Times New Roman; font-size:12pt\"><br \/>\n\t\t<\/span><\/p>\n<p><span style=\"font-family:Times New Roman; font-size:12pt\">\u00a0\u00a0\u00a0\u00a0<br \/>\n<\/span><\/p>\n<p><span style=\"font-family:Times New Roman; font-size:12pt\"> Steam \u00a0\u00a0\u00a0\u00a0<strong>Figure 1.  (3 marks)<br \/>\n<\/strong><\/span><\/p>\n<p style=\"text-align: justify; margin-left: 36pt\"><span style=\"font-family:Times New Roman; font-size:12pt\">(b). A uniform tube 96cm long sealed at end, is lowered vertically with its open end downwards into mercury until the length of the enclosed air column is 84cm. with the aid of a diagram, find the depth of immersion of the tube in the mercury if the atmospheric pressure is 77cm of mercury. <strong>(5marks)<\/strong><br \/>\n\t\t<\/span><\/p>\n<p style=\"text-align: justify\">\n\u00a0<\/p>\n<ol>\n<li>\n<div style=\"text-align: justify\"><span style=\"font-family:Times New Roman; font-size:12pt\">(a) (i) Explain why it is not advisable for soldiers to march across the bridge in rhythm. <strong>(2 mark)<\/strong><br \/>\n\t\t\t\t<\/span><\/div>\n<ol style=\"margin-left: 60pt\">\n<li><span style=\"font-family:Times New Roman; font-size:12pt\">The frequency obtained from a plucked string when the tension is 2N is 400HZ. Calculate the frequency when the tension is increased by 6N.<strong>(4 marks)<\/strong><br \/>\n\t\t\t\t\t<\/span><\/li>\n<\/ol>\n<\/li>\n<\/ol>\n<p style=\"text-align: justify\"><span style=\"font-family:Times New Roman; font-size:12pt\">           (b)The diagram below shows the electromagnetic spectrum. Region D represents visible light<br \/>\n<\/span><\/p>\n<p style=\"margin-left: 108pt\"><span style=\"font-family:Times New Roman; font-size:12pt\"><strong>Increasing frequency.<br \/>\n<\/strong><\/span><\/p>\n<p><img decoding=\"async\" src=\"http:\/\/localhost\/solvefor2\/assets\/images\/kev3\/042222_0911_PHYSICS1FOR21.png\" alt=\"\"\/><span style=\"font-family:Times New Roman; font-size:12pt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<br \/>\n<\/span><\/p>\n<div style=\"margin-left: 113pt\">\n<table style=\"border-collapse:collapse\" border=\"0\">\n<colgroup>\n<col style=\"width:42px\"\/>\n<col style=\"width:36px\"\/>\n<col style=\"width:30px\"\/>\n<col style=\"width:36px\"\/>\n<col style=\"width:36px\"\/>\n<col style=\"width:42px\"\/>\n<col style=\"width:42px\"\/><\/colgroup>\n<tbody valign=\"top\">\n<tr>\n<td style=\"padding-left: 7px; padding-right: 7px; border-top:  solid black 0.5pt; border-left:  solid black 0.5pt; border-bottom:  solid black 0.5pt; border-right:  solid black 0.5pt\">\n<p style=\"text-align: center\"><span style=\"font-family:Times New Roman; font-size:12pt\">A<\/span><\/p>\n<\/td>\n<td style=\"padding-left: 7px; padding-right: 7px; border-top:  solid black 0.5pt; border-left:  none; border-bottom:  solid black 0.5pt; border-right:  solid black 0.5pt\">\n<p style=\"text-align: center\"><span style=\"font-family:Times New Roman; font-size:12pt\">B<\/span><\/p>\n<\/td>\n<td style=\"padding-left: 7px; padding-right: 7px; border-top:  solid black 0.5pt; border-left:  none; border-bottom:  solid black 0.5pt; border-right:  solid black 0.5pt\">\n<p style=\"text-align: center\"><span style=\"font-family:Times New Roman; font-size:12pt\">C<\/span><\/p>\n<\/td>\n<td style=\"padding-left: 7px; padding-right: 7px; border-top:  solid black 0.5pt; border-left:  none; border-bottom:  solid black 0.5pt; border-right:  solid black 0.5pt\">\n<p style=\"text-align: center\"><span style=\"font-family:Times New Roman; font-size:12pt\">D<\/span><\/p>\n<\/td>\n<td style=\"padding-left: 7px; padding-right: 7px; border-top:  solid black 0.5pt; border-left:  none; border-bottom:  solid black 0.5pt; border-right:  solid black 0.5pt\">\n<p style=\"text-align: center\"><span style=\"font-family:Times New Roman; font-size:12pt\">E<\/span><\/p>\n<\/td>\n<td style=\"padding-left: 7px; padding-right: 7px; border-top:  solid black 0.5pt; border-left:  none; border-bottom:  solid black 0.5pt; border-right:  solid black 0.5pt\">\n<p style=\"text-align: center\"><span style=\"font-family:Times New Roman; font-size:12pt\">F<\/span><\/p>\n<\/td>\n<td style=\"padding-left: 7px; padding-right: 7px; border-top:  solid black 0.5pt; border-left:  none; border-bottom:  solid black 0.5pt; border-right:  solid black 0.5pt\">\n<p style=\"text-align: center\"><span style=\"font-family:Times New Roman; font-size:12pt\">G<\/span><\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p><span style=\"font-family:Times New Roman; font-size:12pt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<strong>Figure 2.<br \/>\n<\/strong><\/span><\/p>\n<p><span style=\"font-family:Times New Roman; font-size:12pt\">Which region represents radiations<strong><br \/>\n\t\t\t<\/strong><\/span><\/p>\n<ol style=\"margin-left: 108pt\">\n<li><span style=\"font-family:Times New Roman; font-size:12pt\">Capable of promoting the production of vitamin D in the skin?<br \/>\n<\/span><\/li>\n<li><span style=\"font-family:Times New Roman; font-size:12pt\">Used in radar system? <strong>(4 marks)<\/strong><br \/>\n\t\t\t<\/span><\/li>\n<li><span style=\"font-family:Times New Roman; font-size:12pt\">Produced in nuclear reactors?<br \/>\n<\/span><\/li>\n<li>\n<div><span style=\"font-family:Times New Roman; font-size:12pt\">Used<span style=\"color:black\"> for diagnosis of denser tissue like bones and in treatment of cancer in the hospital.<br \/>\n<\/span><\/span><\/div>\n<p>\n\u00a0<\/p>\n<\/li>\n<\/ol>\n<ol>\n<li>\n<div><span style=\"font-family:Times New Roman; font-size:12pt\">(a) Explain why do two identical cells in series drive more current through the resistor than one does, and why do they not double the current?(<strong>5mark<\/strong>s)<br \/>\n<\/span><\/div>\n<p><span style=\"font-family:Times New Roman; font-size:12pt\"><strong>(<\/strong>b)   A steel tape of correct length at 20 is used to measure a distance on a day when a temperature is 30. If  the linear expansivity of steel is 0.000011\/K, what is the error in measuring a distance of 20m?(<strong>5marks<\/strong>)<br \/>\n<\/span><\/p>\n<p>\n\u00a0<\/p>\n<\/li>\n<li><span style=\"font-family:Times New Roman; font-size:12pt\">(a) (i) Could a camera with a concave lens instead of a convex lens still take Picture? Explain. <strong>(1 mark)<br \/>\n<\/strong><\/span><\/li>\n<\/ol>\n<p style=\"text-align: justify\"><span style=\"font-family:Times New Roman; font-size:12pt\">(ii) Use a diagram to explain why short-sighted people cannot see distant objects clearly.<strong>(2 marks)<\/strong><br \/>\n\t\t<\/span><\/p>\n<p style=\"text-align: justify\"><span style=\"font-family:Times New Roman; font-size:12pt\">(iii) Explain using a diagram, how the inserting a suitable lens in front of the eye will correct its defect.(<strong>2marks<\/strong>)<br \/>\n<\/span><\/p>\n<p style=\"text-align: justify\"><span style=\"font-family:Times New Roman; font-size:12pt\">   (b)(i) Why does air cool when it rises through the atmosphere?(<strong>2marks<\/strong>)<br \/>\n<\/span><\/p>\n<p style=\"text-align: justify\"><span style=\"font-family:Times New Roman; font-size:12pt\"> (ii) State three (3) differences between absolute humidity and relative humidity<strong> (3marks<\/strong>)<br \/>\n<\/span><\/p>\n<p style=\"text-align: justify\">\n\u00a0<\/p>\n<p style=\"text-align: justify\">\n\u00a0<\/p>\n<ol>\n<li>\n<div style=\"text-align: justify\"><span style=\"font-family:Times New Roman; font-size:12pt\">(a) A crown made of gold and silver has a volume of 60 cm<sup>3<\/sup> and a mass of 1.05 kg. find the mass of gold contained in the crown (<strong>4 marks)<\/strong><br \/>\n\t\t\t\t<\/span><\/div>\n<p style=\"text-align: justify\"><span style=\"font-family:Times New Roman; font-size:12pt\">(b).A body of mass 40kg is placed in a straight track sloping at an angle of  to the horizontal. If the body is held from slipping by friction, calculate the normal reaction and the force of friction.(<strong>6marks<\/strong>)<br \/>\n<\/span><\/p>\n<\/li>\n<\/ol>\n<p style=\"text-align: justify\">\n\u00a0<\/p>\n<p style=\"text-align: center\">\n\u00a0<\/p>\n<p style=\"text-align: center\"><span style=\"font-family:Times New Roman; font-size:12pt\"><strong>SECTION C (25 marks)<\/strong><br \/>\n\t\t<\/span><\/p>\n<p style=\"text-align: center; margin-left: 72pt\"><span style=\"font-family:Times New Roman; font-size:12pt\">Answer <strong>only two(2)<\/strong> questions from this section<br \/>\n<\/span><\/p>\n<p style=\"text-align: center; margin-left: 72pt\">\n\u00a0<\/p>\n<p style=\"margin-left: 36pt\"><span style=\"font-family:Times New Roman; font-size:12pt\">9. (a)(i) State the Maxwell&#8217;s Right hand screw Rule.<strong>(2 marks)<\/strong><br \/>\n\t\t<\/span><\/p>\n<p style=\"text-align: justify; margin-left: 36pt\"><span style=\"font-family:Times New Roman; font-size:12pt\">(ii) Using the Maxwell&#8217;s Right hand screw Rule, show the direction of the field on two parallel current carrying conductors in the same direction. Show the direction of force.<strong>(4marks)<\/strong><br \/>\n\t\t<\/span><\/p>\n<p style=\"text-align: justify\">\n\u00a0<\/p>\n<p style=\"text-align: justify\"><span style=\"font-family:Times New Roman; font-size:12pt\">(b)A transformer is designed to work from 240V a.c mains to give a supply at 8V to ring house bells. The primary coil has 4800 turns.<br \/>\n<\/span><\/p>\n<p style=\"text-align: justify\"><span style=\"font-family:Times New Roman; font-size:12pt\">        (i) How many turns would you expect a secondarycoil to have? <strong>(2 marks)<\/strong><br \/>\n\t\t<\/span><\/p>\n<p><span style=\"font-family:Times New Roman; font-size:12pt\">(ii).State how the voltage so required is reduced or increased?           <strong>(1 mark)<\/strong><br \/>\n\t\t<\/span><\/p>\n<p><span style=\"font-family:Times New Roman; font-size:12pt\">      (iii).How is the efficiency of this transformer made as higher as possible?<strong> (1 mark)<br \/>\n<\/strong><\/span><\/p>\n<p><span style=\"font-family:Times New Roman; font-size:12pt\">      (iv) Explain why the primary current decreases when a bell is being rung. <strong>(1 mark)<br \/>\n<\/strong><\/span><\/p>\n<p><span style=\"font-family:Times New Roman; font-size:12pt\">      (v).What would happen if the transformer were connected to 240V d.c mains?<strong> (1.5 mark)  <\/strong><br \/>\n\t\t<\/span><\/p>\n<p>\n\u00a0<\/p>\n<p><span style=\"font-family:Times New Roman; font-size:12pt\">10. (a) Briefly explain the differences between conductors, semiconductors <img decoding=\"async\" src=\"http:\/\/localhost\/solvefor2\/assets\/images\/kev3\/042222_0911_PHYSICS1FOR22.png\" alt=\"\"\/>and insulators in terms of energy level(<strong>6.5marks<\/strong>)<br \/>\n<\/span><\/p>\n<p style=\"text-align: justify\"><span style=\"font-family:Times New Roman; font-size:12pt\"> (b). State any six(6) differences between stars and planets (<strong>6marks<\/strong>)<br \/>\n<\/span><\/p>\n<p><span style=\"font-family:Times New Roman; font-size:12pt\">11. (a)<strong>. <\/strong>Explain the nature of penetration of  rays and explain how each can be prevented from penetrating through others substances(<strong>6.5marks)<br \/>\n<\/strong><\/span><\/p>\n<p><span style=\"font-family:Times New Roman; font-size:12pt\"><strong>       (b<\/strong>).i. Explain why cathode ray tubes (CRT) are evacuated?(<strong>2marks<\/strong>)<br \/>\n<\/span><\/p>\n<p><span style=\"font-family:Times New Roman; font-size:12pt\">ii.What happens to the CRTwhen a gas is maintained?(<strong>2marks<\/strong>)<br \/>\n<\/span><\/p>\n<p><span style=\"font-family:Times New Roman; font-size:12pt\">iii. If a gas is maintained in a CRT, will the image be formed onto the screen? Explain.  (<strong>2marks<\/strong>)<br \/>\n<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>THE UNITED REPUBLIC OF TANZANIA PRESIDENT&#8217;S OFFICE &#8211; REGIONAL ADMINISTRATION AND LOCAL GOVERNMENT BUSEGA DISTRICT COUNCIL FORM FOUR DISTRICTMOCK EXAMINATION<\/p>\n","protected":false},"author":1,"featured_media":309,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[11,1],"tags":[],"class_list":["post-188","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-physics","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v22.3 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>PHYSICS-1 FORM FOUR MOCK EXAMINATION 2021 BUSEGA DISTRICT - MAKTABA EDUCATION CENTER<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/edu.co.tz\/notes\/physics-1-form-four-mock-examination-2021-busega-district\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"PHYSICS-1 FORM FOUR MOCK EXAMINATION 2021 BUSEGA DISTRICT - MAKTABA EDUCATION CENTER\" \/>\n<meta property=\"og:description\" content=\"THE UNITED REPUBLIC OF TANZANIA PRESIDENT&#8217;S OFFICE &#8211; 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