{"id":33577,"date":"2019-08-16T18:30:50","date_gmt":"2019-08-16T13:00:50","guid":{"rendered":"https:\/\/cracku.in\/blog\/?p=33577"},"modified":"2019-08-16T18:40:26","modified_gmt":"2019-08-16T13:10:26","slug":"top-15-rrb-ntpc-physics-problems-pdf","status":"publish","type":"post","link":"https:\/\/cracku.in\/blog\/top-15-rrb-ntpc-physics-problems-pdf\/","title":{"rendered":"Top-15 RRB NTPC Physics Problems PDF"},"content":{"rendered":"<h1><span style=\"font-size: 18pt;\"><strong>Top-15 RRB NTPC Physics Problems PDF<\/strong><\/span><\/h1>\n<p>Download Top-15 Expected Physics Problems for RRB NTPC Stage-1 exam. Go through the video of Repeatedly asked and most important RRB NTPC physics problems questions. These questions are based on previous year questions in Railways and other Govt exams.<\/p>\n<!-- Error, Advert is not available at this time due to schedule\/geolocation restrictions! -->\n<p class=\"text-center\"><a href=\"https:\/\/cracku.in\/downloads\/5949\" target=\"_blank\" class=\"btn btn-danger  download\">Download RRB NTPC Physics Problems PDF<\/a><\/p>\n<p class=\"text-center\"><a href=\"https:\/\/cracku.in\/downloads\/5601\" target=\"_blank\" class=\"btn btn-primary  download\">Download RRB NTPC PHYSICS QUESTIONSset-1 PDF<\/a><\/p>\n<p class=\"text-center\"><a href=\"https:\/\/cracku.in\/downloads\/5841\" target=\"_blank\" class=\"btn btn-info  download\">Download Top &#8211; 100 RRB NTPC Physics Questions set-2 PDF<\/a><\/p>\n<p><strong>Practice:<\/strong><\/p>\n<p>Take a <a href=\"https:\/\/cracku.in\/rrb-ntpc-mock-test\" target=\"_blank\" rel=\"noopener\">free mock test for RRB NTPC<\/a><\/p>\n<p>Practice 4500+\u00a0<a href=\"https:\/\/cracku.in\/rrb-study-material\" target=\"_blank\" rel=\"noopener\">Solved Questions for RRB NTPC<\/a><\/p>\n<p><strong>Download:<\/strong><\/p>\n<p>Download <a href=\"https:\/\/cracku.in\/railways-ntpc-previous-papers\" target=\"_blank\" rel=\"noopener\">RRB NTPC Previous Papers PDF<\/a><\/p>\n<p>Download <a href=\"https:\/\/cracku.in\/blog\/rrb-ntpc-study-material-important-questions-pdf\/\" target=\"_blank\" rel=\"noopener\">RRB NTPC Study Material PDF<\/a><br \/>\n<iframe loading=\"lazy\" width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/phVhFlDal94\" frameborder=\"0\" allow=\"accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen><\/iframe><\/p>\n<h2>Read this Post in <a style=\"color: blue;\" href=\"https:\/\/cracku.in\/blog\/te\/top-15-rrb-ntpc-physics-problems-pdf-in-telugu\/\">Telugu<\/a><\/h2>\n<p><b>Question 1:\u00a0<\/b>If a person moves a trolley for a distance of 10 m with a force of 50 N, then the work done is:<\/p>\n<p>a)\u00a00.2 J<\/p>\n<p>b)\u00a05 J<\/p>\n<p>c)\u00a020 J<\/p>\n<p>d)\u00a0500 J<\/p>\n<p><b>Question 2:\u00a0<\/b>A mass of 20 kg is at a height of 8 m above the ground. Then the potential energy possessed by the body is: [Given g = 9.8$ms^{-2}$]<\/p>\n<p>a)\u00a01568 J<\/p>\n<p>b)\u00a01568 C<\/p>\n<p>c)\u00a01568 W<\/p>\n<p>d)\u00a01568 N<\/p>\n<p><b>Question 3:\u00a0<\/b>The focal length of a lens is 50 centimetre. Its power is:<\/p>\n<p>a)\u00a050 dioptre<\/p>\n<p>b)\u00a01 dioptre<\/p>\n<p>c)\u00a010 dioptre<\/p>\n<p>d)\u00a02 dioptre<\/p>\n<p><b>Question 4:\u00a0<\/b>The potential energy (P.E.) of a body at a certain height is 200 J. The kinetic energy possessed by it when it just touches the surface of the earth is:<\/p>\n<p>a)\u00a0zero<\/p>\n<p>b)\u00a0= P.E.<\/p>\n<p>c)\u00a0&lt;P.E.<\/p>\n<p>d)\u00a0&gt;P.E.<\/p>\n<p class=\"text-center\"><a href=\"https:\/\/cracku.in\/rrb-ntpc-mock-test\" target=\"_blank\" class=\"btn btn-danger \">RRB NTPC Free Mock Test<\/a><\/p>\n<!-- Error, Advert is not available at this time due to schedule\/geolocation restrictions! -->\n<p><b>Question 5:\u00a0<\/b>A sound wave has a frequency of 3.5 kHz and wave length 0.1 m. How long will it take to travel 700 m?<\/p>\n<p>a)\u00a03.0 s<\/p>\n<p>b)\u00a01.5 s<\/p>\n<p>c)\u00a02.0 s<\/p>\n<p>d)\u00a01 s<\/p>\n<p><b>Question 6:\u00a0<\/b>A ball thrown up vertically returns to the ground after 10 second. Find the velocity with which it was thrown up? (if g = 10 m\/s2).<\/p>\n<p>a)\u00a0120 m\/s<\/p>\n<p>b)\u00a050 m\/s<\/p>\n<p>c)\u00a0600 m\/s<\/p>\n<p>d)\u00a060 m\/s<\/p>\n<p><b>Question 7:\u00a0<\/b>An object is placed 30 cm before a concave mirror of focal length of 20 cm to get a real<br \/>\nimage. What will be the distance of the image from the mirror?<\/p>\n<p>a)\u00a060 cm<\/p>\n<p>b)\u00a020 cm<\/p>\n<p>c)\u00a030 cm<\/p>\n<p>d)\u00a040 cm<\/p>\n<p><b>Question 8:\u00a0<\/b>A certain house hold has consumed 320 units of energy during a month. How much energy is this in joules?<\/p>\n<p>a)\u00a0$\u00a09 \\times 10^{8} J\u00a0 $<\/p>\n<p>b)\u00a0$ 5 \\times 10^{8} J\u00a0 $<\/p>\n<p>c)\u00a0$ 10 \\times 10^{5} J\u00a0 $<\/p>\n<p>d)\u00a0$ 1152 \\times 10^{6} J\u00a0 $<\/p>\n<p><b>Question 9:\u00a0<\/b>Calculate the work done by the force of gravity when satellite moves in an orbit of<br \/>\nradius 40,000 km around the earth.<\/p>\n<p>a)\u00a08,000 J<\/p>\n<p>b)\u00a04,00,000 J<\/p>\n<p>c)\u00a00 J<\/p>\n<p>d)\u00a04,000 J<\/p>\n<p><b>Question 10:\u00a0<\/b>An object of 1.2 cm height is placed 30 cm before a concave mirror of focal length of 20 cm to get a real image at a distance of 60 cm from the mirror. What is the height of the image formed?<\/p>\n<p>a)\u00a0-3.6 cm<\/p>\n<p>b)\u00a0-2.4 cm<\/p>\n<p>c)\u00a01.2 cm<\/p>\n<p>d)\u00a02.4 cm<\/p>\n<p class=\"text-center\"><a href=\"https:\/\/cracku.in\/railways-ntpc-previous-papers\" target=\"_blank\" class=\"btn btn-primary \">RRB NTPC Previous Papers [Download PDF]<\/a><\/p>\n<p class=\"text-center\"><a href=\"https:\/\/cracku.in\/rrb-study-material\" target=\"_blank\" class=\"btn btn-danger \">RRB NTPC Study Material &#8211; 4500+ Questions<\/a><\/p>\n<p><b>Question 11:\u00a0<\/b>The radius of curvature of a concave mirror is 30 cm. Following Cartesian Sign Convention, its focal length is expressed as:<\/p>\n<p>a)\u00a0-30 cm<\/p>\n<p>b)\u00a0-15 cm<\/p>\n<p>c)\u00a0+30 cm<\/p>\n<p>d)\u00a0+15 cm<\/p>\n<p><b>Question 12:\u00a0<\/b>Calculate the current flowing through a resistor of 10 ohms when potential difference of 140V is applied across it.<\/p>\n<p>a)\u00a014 Amperes<\/p>\n<p>b)\u00a0140 Amperes<\/p>\n<p>c)\u00a01400 Amperes<\/p>\n<p>d)\u00a01.4 Amperes<\/p>\n<p><b>Question 13:\u00a0<\/b>A transformer has 1000 primary turns. It is connected to 250 volts A.C. supply. Find the number of secondary turns to get secondary voltage of 400 volts.<\/p>\n<p>a)\u00a01600<\/p>\n<p>b)\u00a0625<\/p>\n<p>c)\u00a0100<\/p>\n<p>d)\u00a01250<\/p>\n<p><b>Question 14:\u00a0<\/b>The time period of a vibrating body is 0.04s, then the frequency of the wave is&#8230;&#8230;<\/p>\n<p>a)\u00a025HZ<\/p>\n<p>b)\u00a020Hz<\/p>\n<p>c)\u00a0250Hz<\/p>\n<p>d)\u00a0200Hz<\/p>\n<p><b>Question 15:\u00a0<\/b>The power of a lens is \u20142.5 D. The type of lens and its focal length are respectively:<\/p>\n<p>a)\u00a0Convex, -0.40 m<\/p>\n<p>b)\u00a0Concave, -0.40 m<\/p>\n<p>c)\u00a0Concave, 0.40 m<\/p>\n<p>d)\u00a0Convex, 0.40 m<\/p>\n<p class=\"text-center\"><a href=\"https:\/\/cracku.in\/rrb-online-test\" target=\"_blank\" class=\"btn btn-danger \"> Daily Free RRB Online Tests for RRB Exams<\/a><\/p>\n<p class=\"text-center\"><a href=\"https:\/\/cracku.in\/rrb-ntpc-mock-test\" target=\"_blank\" class=\"btn btn-primary \">RRB NTPC Free Mock Test<\/a><\/p>\n<p><span style=\"text-decoration: underline;\"><strong>Answers &amp; Solutions:<\/strong><\/span><\/p>\n<p><strong>1)\u00a0Answer\u00a0(D)<\/strong><\/p>\n<p><strong>2)\u00a0Answer\u00a0(A)<\/strong><\/p>\n<p><strong>3)\u00a0Answer\u00a0(D)<\/strong><\/p>\n<p><strong>4)\u00a0Answer\u00a0(B)<\/strong><\/p>\n<p><strong>5)\u00a0Answer\u00a0(C)<\/strong><\/p>\n<p>The velocity of the soundwave is wavelength*frequency = 3500*0.1 = 350 m\/s<\/p>\n<p>Hence, the amount of time it takes to travel 700m is 700\/350 = 2 seconds.<\/p>\n<p><strong>6)\u00a0Answer\u00a0(B)<\/strong><\/p>\n<p>The ball comes to a stop in the air after 10\/2 = 5 seconds.<\/p>\n<p>Hence, the initial velocity of the ball is 5*10 = 50 m\/s<\/p>\n<p><strong>7)\u00a0Answer\u00a0(A)<\/strong><\/p>\n<p><strong>8)\u00a0Answer\u00a0(D)<\/strong><\/p>\n<p><strong>9)\u00a0Answer\u00a0(C)<\/strong><\/p>\n<p><strong>10)\u00a0Answer\u00a0(B)<\/strong><\/p>\n<p>Given, height of the object = 1.2 cm<br \/>\nFocal length f = -20 cm (focal length is negative for a concave mirror)<br \/>\nDistance of the image v = -60 cm<br \/>\nWe know that<br \/>\n$\\dfrac{1}{u} + \\dfrac{1}{v} = \\dfrac{1}{f}$<br \/>\nHere, u is object distance, v is image distance, f is focal length<br \/>\n$\\dfrac{-1}{60} + \\dfrac{1}{u} = \\dfrac{-1}{20}$<\/p>\n<p>$\\dfrac{1}{u} = \\dfrac{1}{60} &#8211; \\dfrac{1}{20}$<\/p>\n<p>$\\dfrac{1}{u} = \\dfrac{-1}{30}$<\/p>\n<p>=&gt; u = -30 cm<br \/>\nWe know that,<br \/>\n$\\dfrac{\\text{Height of the image}}{\\text{Height of the object}} = \\dfrac{-v}{u}$<\/p>\n<p>$\\dfrac{\\text{Height of the image}}{1.2} = \\dfrac{-(-60)}{-30}$<\/p>\n<p>Height of the image = -2.4 cm<\/p>\n<p><strong>11)\u00a0Answer\u00a0(B)<\/strong><\/p>\n<p>Focal length is half of radius.<br \/>\nThen, f = 30\/2 = 15 cm<br \/>\nFor a concave mirror, focal length will be negative. Hence, f = -15 cm<\/p>\n<p><strong>12)\u00a0Answer\u00a0(A)<\/strong><\/p>\n<p><strong>13)\u00a0Answer\u00a0(A)<\/strong><\/p>\n<p><strong>14)\u00a0Answer\u00a0(A)<\/strong><\/p>\n<p><strong>15)\u00a0Answer\u00a0(B)<\/strong><\/p>\n<p class=\"text-center\"><a href=\"https:\/\/play.google.com\/store\/apps\/details?id=in.cracku.app&amp;hl=en_US\" target=\"_blank\" class=\"btn btn-danger \">DOWNLOAD APP FOR RRB FREE MOCKS<\/a><\/p>\n<p>We hope this very important RRB NTPC Physics Problems\u00a0 will be very helpful to you.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Top-15 RRB NTPC Physics Problems PDF Download Top-15 Expected Physics Problems for RRB NTPC Stage-1 exam. Go through the video of Repeatedly asked and most important RRB NTPC physics problems questions. These questions are based on previous year questions in Railways and other Govt exams. Practice: Take a free mock test for RRB NTPC Practice [&hellip;]<\/p>\n","protected":false},"author":30,"featured_media":33638,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_mi_skip_tracking":false,"footnotes":""},"categories":[31,1679,1897,1603],"tags":[1593,2380],"class_list":{"0":"post-33577","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-railways","8":"category-rrb-group-d","9":"category-rrb-group-d-2","10":"category-rrb-ntpc","11":"tag-rrb-ntpc","12":"tag-rrb-ntpc-physics-questions-en"},"better_featured_image":{"id":33638,"alt_text":"RRB NTPC Physics Problems","caption":"RRB NTPC Physics Problems","description":"RRB NTPC Physics 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Go through the video of Repeatedly asked and most important RRB NTPC physics problems questions. These questions are based on previous year questions in Railways and other Govt exams. 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