{"id":972,"date":"2025-06-30T23:04:19","date_gmt":"2025-06-30T17:34:19","guid":{"rendered":"https:\/\/jobfocus.in\/test\/?p=972"},"modified":"2025-06-30T23:07:11","modified_gmt":"2025-06-30T17:37:11","slug":"gre-physics-practice-test-1","status":"publish","type":"post","link":"https:\/\/www.jobfocus.in\/test\/gre\/gre-physics-practice-test-1\/","title":{"rendered":"GRE Physics Practice Test 1"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Online <strong>GRE Physics Practice Test 1<\/strong> for different Competitive Exams, Entrance Tests &amp; Job Interviews. Test yourself. Take various online tests and find out how well you score before appearing in your upcoming interviews and written tests.<\/p>\n\n\n\n<div id=\"instructionBox\">\n    <h2 style=\"text-align: center;color:#fe5555;\">Instructions<\/h2>\n    <p>Welcome to our <b style=\"color:#fe5555;\">FREE<\/b> online test. Beware of anyone asking for money to take this test.<\/p>\n    <p>Total questions: <b>20<\/b><\/p>\n    <p>Time limit: <b>30 minutes<\/b><\/p>\n    <p>Each question is worth 1 point, and there are no penalties for wrong answers.<\/p>\n    <p>DO NOT refresh the page.<\/p>\n    <p>Good luck!<\/p>\n    <center><button id=\"startButton\" onclick=\"startTest()\">Start Test<\/button><\/center>\n<\/div>\n\n<div id=\"timer\">Time remaining: <span id=\"time\">30:00<\/span><\/div>\n\n<form id=\"quizForm\">\n\n<div class=\"mcq-question\">\n    <b>1. A particle moves in a circular path with a constant speed. Which of the following statements is true about its acceleration?<\/b>\n    <ol class=\"mcq-option\">\n        <li><input type=\"radio\" class=\"check-option\" name=\"q1\" value=\"0\"> The acceleration is zero because the speed is constant.<\/li>\n        <li><input type=\"radio\" class=\"check-option\" name=\"q1\" value=\"1\"> The acceleration is directed toward the center of the circle.<\/li>\n        <li><input type=\"radio\" class=\"check-option\" name=\"q1\" value=\"0\"> The acceleration is tangential to the path.<\/li>\n        <li><input type=\"radio\" class=\"check-option\" name=\"q1\" value=\"0\"> The acceleration is inversely proportional to the radius.<\/li>\n    <\/ol>\n<\/div>\n\n<div class=\"mcq-question\">\n    <b>2. A 2 kg block slides down a frictionless inclined plane at 30 degrees to the horizontal. What is its acceleration along the plane? (g = 9.8 m\/s\u00b2)<\/b>\n    <ol class=\"mcq-option\">\n        <li><input type=\"radio\" class=\"check-option\" name=\"q2\" value=\"0\"> 9.8 m\/s\u00b2<\/li>\n        <li><input type=\"radio\" class=\"check-option\" name=\"q2\" value=\"1\"> 4.9 m\/s\u00b2<\/li>\n        <li><input type=\"radio\" class=\"check-option\" name=\"q2\" value=\"0\"> 8.5 m\/s\u00b2<\/li>\n        <li><input type=\"radio\" class=\"check-option\" name=\"q2\" value=\"0\"> 2.45 m\/s\u00b2<\/li>\n    <\/ol>\n<\/div>\n\n<div class=\"mcq-question\">\n    <b>3. Match the following quantum numbers with their correct descriptions:<\/b>\n    <ol class=\"mcq-option\">\n        <li><input type=\"radio\" class=\"check-option\" name=\"q3\" value=\"0\"> n &#8211; Spin of the electron<\/li>\n        <li><input type=\"radio\" class=\"check-option\" name=\"q3\" value=\"1\"> l &#8211; Orbital angular momentum<\/li>\n        <li><input type=\"radio\" class=\"check-option\" name=\"q3\" value=\"0\"> m_l &#8211; Principal energy level<\/li>\n        <li><input type=\"radio\" class=\"check-option\" name=\"q3\" value=\"0\"> s &#8211; Magnetic quantum number<\/li>\n    <\/ol>\n<\/div>\n\n<div class=\"mcq-question\">\n    <b>4. A scientist observes that light passing through a double-slit produces an interference pattern. If the slit separation is halved, what happens to the fringe spacing?<\/b>\n    <ol class=\"mcq-option\">\n        <li><input type=\"radio\" class=\"check-option\" name=\"q4\" value=\"0\"> It remains unchanged.<\/li>\n        <li><input type=\"radio\" class=\"check-option\" name=\"q4\" value=\"0\"> It decreases by a factor of \u221a2.<\/li>\n        <li><input type=\"radio\" class=\"check-option\" name=\"q4\" value=\"1\"> It doubles.<\/li>\n        <li><input type=\"radio\" class=\"check-option\" name=\"q4\" value=\"0\"> It becomes four times larger.<\/li>\n    <\/ol>\n<\/div>\n\n<div class=\"mcq-question\">\n    <b>5. Arrange the following electromagnetic waves in increasing order of wavelength: (1) X-rays (2) Radio waves (3) Visible light (4) Gamma rays<\/b>\n    <ol class=\"mcq-option\">\n        <li><input type=\"radio\" class=\"check-option\" name=\"q5\" value=\"0\"> 4, 1, 3, 2<\/li>\n        <li><input type=\"radio\" class=\"check-option\" name=\"q5\" value=\"1\"> 4, 1, 3, 2<\/li>\n        <li><input type=\"radio\" class=\"check-option\" name=\"q5\" value=\"0\"> 2, 3, 1, 4<\/li>\n        <li><input type=\"radio\" class=\"check-option\" name=\"q5\" value=\"0\"> 1, 4, 2, 3<\/li>\n    <\/ol>\n<\/div>\n\n<div class=\"mcq-question\">\n    <b>6. The work function of a metal is 2.3 eV. What is the minimum frequency of light required to eject electrons from its surface? (h = 4.14 \u00d7 10\u207b\u00b9\u2075 eV\u00b7s)<\/b>\n    <ol class=\"mcq-option\">\n        <li><input type=\"radio\" class=\"check-option\" name=\"q6\" value=\"0\"> 3.6 \u00d7 10\u00b9\u2074 Hz<\/li>\n        <li><input type=\"radio\" class=\"check-option\" name=\"q6\" value=\"0\"> 1.8 \u00d7 10\u00b9\u2075 Hz<\/li>\n        <li><input type=\"radio\" class=\"check-option\" name=\"q6\" value=\"1\"> 5.56 \u00d7 10\u00b9\u2074 Hz<\/li>\n        <li><input type=\"radio\" class=\"check-option\" name=\"q6\" value=\"0\"> 6.7 \u00d7 10\u00b9\u00b3 Hz<\/li>\n    <\/ol>\n<\/div>\n\n<div class=\"mcq-question\">\n    <b>7. A parallel-plate capacitor has a capacitance of 10 \u00b5F. If the distance between the plates is doubled while keeping the charge constant, what is the new capacitance?<\/b>\n    <ol class=\"mcq-option\">\n        <li><input type=\"radio\" class=\"check-option\" name=\"q7\" value=\"0\"> 20 \u00b5F<\/li>\n        <li><input type=\"radio\" class=\"check-option\" name=\"q7\" value=\"1\"> 5 \u00b5F<\/li>\n        <li><input type=\"radio\" class=\"check-option\" name=\"q7\" value=\"0\"> 10 \u00b5F<\/li>\n        <li><input type=\"radio\" class=\"check-option\" name=\"q7\" value=\"0\"> 40 \u00b5F<\/li>\n    <\/ol>\n<\/div>\n\n<div class=\"mcq-question\">\n    <b>8. A 500-word passage describes a thermodynamic cycle involving isothermal and adiabatic processes. Which of the following is true for an ideal gas in an isothermal expansion?<\/b>\n    <ol class=\"mcq-option\">\n        <li><input type=\"radio\" class=\"check-option\" name=\"q8\" value=\"0\"> The internal energy increases.<\/li>\n        <li><input type=\"radio\" class=\"check-option\" name=\"q8\" value=\"0\"> No work is done by the gas.<\/li>\n        <li><input type=\"radio\" class=\"check-option\" name=\"q8\" value=\"1\"> The temperature remains constant.<\/li>\n        <li><input type=\"radio\" class=\"check-option\" name=\"q8\" value=\"0\"> Heat is lost by the system.<\/li>\n    <\/ol>\n<\/div>\n\n<div class=\"mcq-question\">\n    <b>9. Assertion: In a uniform magnetic field, a charged particle moves in a helical path if it has a velocity component perpendicular to the field. Reason: The parallel component of velocity remains unchanged, while the perpendicular component causes circular motion.<\/b>\n    <ol class=\"mcq-option\">\n        <li><input type=\"radio\" class=\"check-option\" name=\"q9\" value=\"0\"> Both assertion and reason are false.<\/li>\n        <li><input type=\"radio\" class=\"check-option\" name=\"q9\" value=\"0\"> The assertion is true, but the reason is false.<\/li>\n        <li><input type=\"radio\" class=\"check-option\" name=\"q9\" value=\"1\"> Both assertion and reason are true, and the reason explains the assertion.<\/li>\n        <li><input type=\"radio\" class=\"check-option\" name=\"q9\" value=\"0\"> The assertion is false, but the reason is true.<\/li>\n    <\/ol>\n<\/div>\n\n<div class=\"mcq-question\">\n    <b>10. The half-life of a radioactive element is 8 days. What fraction of the original sample remains after 24 days?<\/b>\n    <ol class=\"mcq-option\">\n        <li><input type=\"radio\" class=\"check-option\" name=\"q10\" value=\"0\"> 1\/16<\/li>\n        <li><input type=\"radio\" class=\"check-option\" name=\"q10\" value=\"0\"> 1\/8<\/li>\n        <li><input type=\"radio\" class=\"check-option\" name=\"q10\" value=\"1\"> 1\/8<\/li>\n        <li><input type=\"radio\" class=\"check-option\" name=\"q10\" value=\"0\"> 1\/2<\/li>\n    <\/ol>\n<\/div>\n\n<div class=\"mcq-question\">\n    <b>11. A standing wave is formed on a string fixed at both ends. If the length of the string is L, what is the wavelength of the third harmonic?<\/b>\n    <ol class=\"mcq-option\">\n        <li><input type=\"radio\" class=\"check-option\" name=\"q11\" value=\"0\"> L<\/li>\n        <li><input type=\"radio\" class=\"check-option\" name=\"q11\" value=\"0\"> 2L\/3<\/li>\n        <li><input type=\"radio\" class=\"check-option\" name=\"q11\" value=\"1\"> 2L\/3<\/li>\n        <li><input type=\"radio\" class=\"check-option\" name=\"q11\" value=\"0\"> L\/2<\/li>\n    <\/ol>\n<\/div>\n\n<div class=\"mcq-question\">\n    <b>12. In a Young&#8217;s double-slit experiment, the intensity of light at a point where the path difference is \u03bb\/4 is I. What is the maximum possible intensity?<\/b>\n    <ol class=\"mcq-option\">\n        <li><input type=\"radio\" class=\"check-option\" name=\"q12\" value=\"0\"> I<\/li>\n        <li><input type=\"radio\" class=\"check-option\" name=\"q12\" value=\"1\"> 2I<\/li>\n        <li><input type=\"radio\" class=\"check-option\" name=\"q12\" value=\"0\"> 4I<\/li>\n        <li><input type=\"radio\" class=\"check-option\" name=\"q12\" value=\"0\"> I\/2<\/li>\n    <\/ol>\n<\/div>\n\n<div class=\"mcq-question\">\n    <b>13. A hydrogen atom transitions from the n=3 to n=1 state. Which of the following describes the emitted photon?<\/b>\n    <ol class=\"mcq-option\">\n        <li><input type=\"radio\" class=\"check-option\" name=\"q13\" value=\"0\"> It has a longer wavelength than a n=2 to n=1 transition.<\/li>\n        <li><input type=\"radio\" class=\"check-option\" name=\"q13\" value=\"0\"> Its energy is less than that of a n=4 to n=2 transition.<\/li>\n        <li><input type=\"radio\" class=\"check-option\" name=\"q13\" value=\"1\"> Its energy equals the difference between the n=3 and n=1 levels.<\/li>\n        <li><input type=\"radio\" class=\"check-option\" name=\"q13\" value=\"0\"> It is in the microwave region of the spectrum.<\/li>\n    <\/ol>\n<\/div>\n\n<div class=\"mcq-question\">\n    <b>14. A cylindrical conductor of radius R carries a current I uniformly distributed across its cross-section. What is the magnetic field at a distance r < R from the center?<\/b>\n    <ol class=\"mcq-option\">\n        <li><input type=\"radio\" class=\"check-option\" name=\"q14\" value=\"0\"> Zero<\/li>\n        <li><input type=\"radio\" class=\"check-option\" name=\"q14\" value=\"0\"> Proportional to 1\/r<\/li>\n        <li><input type=\"radio\" class=\"check-option\" name=\"q14\" value=\"0\"> Proportional to r\u00b2<\/li>\n        <li><input type=\"radio\" class=\"check-option\" name=\"q14\" value=\"1\"> Proportional to r<\/li>\n    <\/ol>\n<\/div>\n\n<div class=\"mcq-question\">\n    <b>15. A thermodynamic system undergoes a cyclic process. Which of the following must be zero for the entire cycle?<\/b>\n    <ol class=\"mcq-option\">\n        <li><input type=\"radio\" class=\"check-option\" name=\"q15\" value=\"0\"> Work done<\/li>\n        <li><input type=\"radio\" class=\"check-option\" name=\"q15\" value=\"0\"> Heat transfer<\/li>\n        <li><input type=\"radio\" class=\"check-option\" name=\"q15\" value=\"0\"> Entropy change<\/li>\n        <li><input type=\"radio\" class=\"check-option\" name=\"q15\" value=\"1\"> Change in internal energy<\/li>\n    <\/ol>\n<\/div>\n\n<div class=\"mcq-question\">\n    <b>16. A particle of mass m is in a one-dimensional infinite potential well of width L. If the energy of the ground state is E, what is the energy of the first excited state?<\/b>\n    <ol class=\"mcq-option\">\n        <li><input type=\"radio\" class=\"check-option\" name=\"q16\" value=\"0\"> E<\/li>\n        <li><input type=\"radio\" class=\"check-option\" name=\"q16\" value=\"0\"> 2E<\/li>\n        <li><input type=\"radio\" class=\"check-option\" name=\"q16\" value=\"1\"> 4E<\/li>\n        <li><input type=\"radio\" class=\"check-option\" name=\"q16\" value=\"0\"> 8E<\/li>\n    <\/ol>\n<\/div>\n\n<div class=\"mcq-question\">\n    <b>17. A beam of unpolarized light passes through two polarizers. The first polarizer is oriented at 30\u00b0 to the vertical, and the second at 60\u00b0 to the vertical. What fraction of the initial intensity is transmitted?<\/b>\n    <ol class=\"mcq-option\">\n        <li><input type=\"radio\" class=\"check-option\" name=\"q17\" value=\"0\"> 1\/8<\/li>\n        <li><input type=\"radio\" class=\"check-option\" name=\"q17\" value=\"1\"> 3\/8<\/li>\n        <li><input type=\"radio\" class=\"check-option\" name=\"q17\" value=\"0\"> 1\/4<\/li>\n        <li><input type=\"radio\" class=\"check-option\" name=\"q17\" value=\"0\"> 1\/2<\/li>\n    <\/ol>\n<\/div>\n\n<div class=\"mcq-question\">\n    <b>18. A satellite orbits Earth in a circular path. If the radius of the orbit is doubled, what happens to its orbital speed?<\/b>\n    <ol class=\"mcq-option\">\n        <li><input type=\"radio\" class=\"check-option\" name=\"q18\" value=\"0\"> Increases by a factor of 2<\/li>\n        <li><input type=\"radio\" class=\"check-option\" name=\"q18\" value=\"0\"> Remains unchanged<\/li>\n        <li><input type=\"radio\" class=\"check-option\" name=\"q18\" value=\"1\"> Decreases by a factor of \u221a2<\/li>\n        <li><input type=\"radio\" class=\"check-option\" name=\"q18\" value=\"0\"> Decreases by a factor of 2<\/li>\n    <\/ol>\n<\/div>\n\n<div class=\"mcq-question\">\n    <b>19. In a nuclear reaction, the mass defect is 0.02 atomic mass units. What is the energy released? (1 amu = 931 MeV)<\/b>\n    <ol class=\"mcq-option\">\n        <li><input type=\"radio\" class=\"check-option\" name=\"q19\" value=\"0\"> 0.02 MeV<\/li>\n        <li><input type=\"radio\" class=\"check-option\" name=\"q19\" value=\"0\"> 9.31 MeV<\/li>\n        <li><input type=\"radio\" class=\"check-option\" name=\"q19\" value=\"1\"> 18.62 MeV<\/li>\n        <li><input type=\"radio\" class=\"check-option\" name=\"q19\" value=\"0\"> 465.5 MeV<\/li>\n    <\/ol>\n<\/div>\n\n<div class=\"mcq-question\">\n    <b>20. A 100-word passage describes a gas expanding adiabatically. Which statement is true?<\/b>\n    <ol class=\"mcq-option\">\n        <li><input type=\"radio\" class=\"check-option\" name=\"q20\" value=\"0\"> The temperature increases.<\/li>\n        <li><input type=\"radio\" class=\"check-option\" name=\"q20\" value=\"0\"> Heat is added to the system.<\/li>\n        <li><input type=\"radio\" class=\"check-option\" name=\"q20\" value=\"0\"> The pressure remains constant.<\/li>\n        <li><input type=\"radio\" class=\"check-option\" name=\"q20\" value=\"1\"> The internal energy decreases.<\/li>\n    <\/ol>\n<\/div>\n\n    <button type=\"button\" id=\"submitButton\" onclick=\"submitQuiz()\">Submit<\/button>\n<\/form>\n\n<div id=\"countdown\">\n    <div class=\"result-box\" id=\"result\"><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Online GRE Physics Practice Test 1 for different Competitive Exams, Entrance Tests &amp; Job Interviews. Test yourself. Take various online [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_post_was_ever_published":false},"categories":[93],"tags":[95,100,98],"class_list":["post-972","post","type-post","status-publish","format-standard","hentry","category-gre","tag-gre-mock-test","tag-gre-physics-practice-test","tag-gre-practice-test"],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.jobfocus.in\/test\/wp-json\/wp\/v2\/posts\/972","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.jobfocus.in\/test\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.jobfocus.in\/test\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.jobfocus.in\/test\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.jobfocus.in\/test\/wp-json\/wp\/v2\/comments?post=972"}],"version-history":[{"count":3,"href":"https:\/\/www.jobfocus.in\/test\/wp-json\/wp\/v2\/posts\/972\/revisions"}],"predecessor-version":[{"id":975,"href":"https:\/\/www.jobfocus.in\/test\/wp-json\/wp\/v2\/posts\/972\/revisions\/975"}],"wp:attachment":[{"href":"https:\/\/www.jobfocus.in\/test\/wp-json\/wp\/v2\/media?parent=972"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.jobfocus.in\/test\/wp-json\/wp\/v2\/categories?post=972"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.jobfocus.in\/test\/wp-json\/wp\/v2\/tags?post=972"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}