{"id":335,"date":"2020-09-15T12:21:27","date_gmt":"2020-09-15T07:21:27","guid":{"rendered":"https:\/\/talib.pk\/test-preparation\/?p=335"},"modified":"2020-09-15T12:21:27","modified_gmt":"2020-09-15T07:21:27","slug":"physics-chapter-20-atomic-spectra-mcqs-with-answers-2nd-year","status":"publish","type":"post","link":"https:\/\/talib.pk\/test-preparation\/physics-chapter-20-atomic-spectra-mcqs-with-answers-2nd-year\/","title":{"rendered":"Physics Chapter 20 Atomic Spectra MCQs with Answers 2nd Year"},"content":{"rendered":"<div class=\"28d95f43054b69d67289d6316e9506d8\" data-index=\"1\" style=\"float: none; margin:12px 0 12px 0; text-align:center;\">\n<script async src=\"\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js\"><\/script>\r\n<!-- talib-new -->\r\n<ins class=\"adsbygoogle\"\r\n     style=\"display:block\"\r\n     data-ad-client=\"ca-pub-3438155045791616\"\r\n     data-ad-slot=\"6774242552\"\r\n     data-ad-format=\"auto\"><\/ins>\r\n<script>\r\n(adsbygoogle = window.adsbygoogle || []).push({});\r\n<\/script>\n<\/div>\n<p>The second last chapter is about Atomic Spectra and we will study Physics Chapter 20 Atomic Spectra MCQs with Answers 2nd Year. Spectrum is the set of frequencies absorbed or emitted by a substance. The Spectrum of Hydrogen is studied here and it has 5 series. In addition to Rutherford\u2019s atomic model, Bohr proposed an atomic model to remove the objections. His atomic model is a mixture of classical and modern physics. Here we will also study the energies and potentials of these spectra. Then the characteristics of X-rays are very important. There is some uncertainty within the atom-like an electron can\u2019t exist in the nucleus. In the end, there is an important topic of LASER. It has different characteristics and Properties included in this chapter. So, this is a brief intro about the 2nd Year Physics Chapter 20 Atomic Spectra.<\/p>\n<h2 style=\"text-align: center;\">Physics Chapter 20 Atomic Spectra MCQs with Answers<br \/>\n2nd Year<\/h2>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"size-full wp-image-336 aligncenter\" src=\"https:\/\/talib.pk\/test-preparation\/wp-content\/uploads\/2020\/09\/Physics-2nd-Year-MCQs-8.jpg\" alt=\"Physics Chapter 20 Atomic Spectra MCQs with Answers 2nd Year\" width=\"300\" height=\"300\" srcset=\"https:\/\/talib.pk\/test-preparation\/wp-content\/uploads\/2020\/09\/Physics-2nd-Year-MCQs-8.jpg 300w, https:\/\/talib.pk\/test-preparation\/wp-content\/uploads\/2020\/09\/Physics-2nd-Year-MCQs-8-150x150.jpg 150w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/p>\n\n    <!-- Custom CSS for Quiz -->\n    <style type=\"text\/css\">\n\n    \/* Fixes *\/\n    #advq_quiz_304 ul.advq_question_list {\n        padding:10px 0;\n        margin:0;\n    }\n\n    #advq_quiz_304 {\n        font-family: ;\n     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data-quiz-id='304' id='advq_quiz_304' data-qtype='trivia' data-qlayout='minimal' data-unique-visitor='6a38868f4ea5e' data-start-time='1782089359' data-options='{\"provide_result\":false,\"allow_change\":false,\"result_position\":\"inline\",\"one_page\":true,\"scroll_to_next\":false,\"progress_bar\":\"disabled\",\"back_button\":false,\"list_mode\":false,\"relation\":\"AND\"}'><div  data-mandatory=\"\" class=\"advq_question_container \" ><div class=\"advq_question_wrap\"><div class=\"advq_question\" data-question-id=\"question-14\" >The angular momentum of electron in nth orbit is given by:<\/div><ul data-priority=\"normal\" data-type=\"radio\" data-relation=\"ignore\" class=\"advq_question_list\" data-question-id=\"question-14\"><li class=\"quiz_unselected_answer\"><input data-value='nh\/2 &pi;' data-rule='1' id='question-14_0' name='question-14' type='radio' data-points='1'> <label for='question-14_0'><span class=\"advq_a_input\"><i class=\"fa fa-square-o\" aria-hidden=\"true\"><\/i><\/span>nh\/2 \u03c0<\/label><\/li><li class=\"quiz_unselected_answer\"><input data-value='nh' data-rule='0' id='question-14_1' name='question-14' type='radio' data-points='1'> <label for='question-14_1'><span class=\"advq_a_input\"><i class=\"fa fa-square-o\" aria-hidden=\"true\"><\/i><\/span>nh<\/label><\/li><li class=\"quiz_unselected_answer\"><input data-value='n^2h\/2 &pi;' data-rule='0' id='question-14_2' name='question-14' type='radio' data-points='1'> <label for='question-14_2'><span class=\"advq_a_input\"><i class=\"fa fa-square-o\" aria-hidden=\"true\"><\/i><\/span>n^2h\/2 \u03c0<\/label><\/li><li class=\"quiz_unselected_answer\"><input data-value='h\/2&pi;n' data-rule='0' id='question-14_3' name='question-14' type='radio' data-points='1'> <label for='question-14_3'><span class=\"advq_a_input\"><i class=\"fa fa-square-o\" aria-hidden=\"true\"><\/i><\/span>h\/2\u03c0n<\/label><\/li><\/ul><\/div><\/div><div  data-mandatory=\"\" class=\"advq_question_container \" ><div class=\"advq_question_wrap\"><div class=\"advq_question\" data-question-id=\"question-4\" >X-rays cannot produce:<\/div><ul data-priority=\"normal\" data-type=\"radio\" data-relation=\"ignore\" class=\"advq_question_list\" data-question-id=\"question-4\"><li class=\"quiz_unselected_answer\"><input data-value='Pair Production' data-rule='1' id='question-4_0' name='question-4' type='radio' data-points='1'> <label for='question-4_0'><span class=\"advq_a_input\"><i class=\"fa fa-square-o\" aria-hidden=\"true\"><\/i><\/span>Pair Production<\/label><\/li><li class=\"quiz_unselected_answer\"><input data-value='Photoelectric effect' data-rule='0' id='question-4_1' name='question-4' type='radio' data-points='1'> <label for='question-4_1'><span class=\"advq_a_input\"><i class=\"fa fa-square-o\" aria-hidden=\"true\"><\/i><\/span>Photoelectric effect<\/label><\/li><li class=\"quiz_unselected_answer\"><input data-value='All of these' data-rule='0' id='question-4_2' name='question-4' type='radio' data-points='1'> <label for='question-4_2'><span class=\"advq_a_input\"><i class=\"fa fa-square-o\" aria-hidden=\"true\"><\/i><\/span>All of these<\/label><\/li><li class=\"quiz_unselected_answer\"><input data-value='Compton&rsquo;s effect' data-rule='0' id='question-4_3' name='question-4' type='radio' data-points='1'> <label for='question-4_3'><span class=\"advq_a_input\"><i class=\"fa fa-square-o\" aria-hidden=\"true\"><\/i><\/span>Compton\u2019s effect<\/label><\/li><\/ul><\/div><\/div><div  data-mandatory=\"\" class=\"advq_question_container \" ><div class=\"advq_question_wrap\"><div class=\"advq_question\" data-question-id=\"question-2\" >Excited atoms return to their ground state in:<\/div><ul data-priority=\"normal\" data-type=\"radio\" data-relation=\"ignore\" class=\"advq_question_list\" data-question-id=\"question-2\"><li class=\"quiz_unselected_answer\"><input data-value='10^-10s' data-rule='0' id='question-2_0' name='question-2' type='radio' data-points='1'> <label for='question-2_0'><span class=\"advq_a_input\"><i class=\"fa fa-square-o\" aria-hidden=\"true\"><\/i><\/span>10^-10s<\/label><\/li><li class=\"quiz_unselected_answer\"><input data-value='10^-8s' data-rule='1' id='question-2_1' name='question-2' type='radio' data-points='1'> <label for='question-2_1'><span class=\"advq_a_input\"><i class=\"fa fa-square-o\" aria-hidden=\"true\"><\/i><\/span>10^-8s<\/label><\/li><li class=\"quiz_unselected_answer\"><input data-value='10^-6s' data-rule='0' id='question-2_2' name='question-2' type='radio' data-points='1'> <label for='question-2_2'><span class=\"advq_a_input\"><i class=\"fa fa-square-o\" aria-hidden=\"true\"><\/i><\/span>10^-6s<\/label><\/li><li class=\"quiz_unselected_answer\"><input data-value='10^-9s' data-rule='0' id='question-2_3' name='question-2' type='radio' data-points='1'> <label for='question-2_3'><span class=\"advq_a_input\"><i class=\"fa fa-square-o\" aria-hidden=\"true\"><\/i><\/span>10^-9s<\/label><\/li><\/ul><\/div><\/div><div  data-mandatory=\"\" class=\"advq_question_container \" ><div class=\"advq_question_wrap\"><div class=\"advq_question\" data-question-id=\"question-5\" >Radiation with wavelength longer than red lights: <\/div><ul data-priority=\"normal\" data-type=\"radio\" data-relation=\"ignore\" class=\"advq_question_list\" data-question-id=\"question-5\"><li class=\"quiz_unselected_answer\"><input data-value='UV rays ' data-rule='0' id='question-5_0' name='question-5' type='radio' data-points='1'> <label for='question-5_0'><span class=\"advq_a_input\"><i class=\"fa fa-square-o\" aria-hidden=\"true\"><\/i><\/span>UV rays <\/label><\/li><li class=\"quiz_unselected_answer\"><input data-value='Visible radiation' data-rule='0' id='question-5_1' name='question-5' type='radio' data-points='1'> <label for='question-5_1'><span class=\"advq_a_input\"><i class=\"fa fa-square-o\" aria-hidden=\"true\"><\/i><\/span>Visible radiation<\/label><\/li><li class=\"quiz_unselected_answer\"><input data-value='X-rays' data-rule='0' id='question-5_2' name='question-5' type='radio' data-points='1'> <label for='question-5_2'><span class=\"advq_a_input\"><i class=\"fa fa-square-o\" aria-hidden=\"true\"><\/i><\/span>X-rays<\/label><\/li><li class=\"quiz_unselected_answer\"><input data-value='Infrared radiations' data-rule='1' id='question-5_3' name='question-5' type='radio' data-points='1'> <label for='question-5_3'><span class=\"advq_a_input\"><i class=\"fa fa-square-o\" aria-hidden=\"true\"><\/i><\/span>Infrared radiations<\/label><\/li><\/ul><\/div><\/div><div  data-mandatory=\"\" class=\"advq_question_container \" ><div class=\"advq_question_wrap\"><div class=\"advq_question\" data-question-id=\"question-15\" >Reverse process of photoelectric effect is:<\/div><ul data-priority=\"normal\" data-type=\"radio\" data-relation=\"ignore\" class=\"advq_question_list\" data-question-id=\"question-15\"><li class=\"quiz_unselected_answer\"><input data-value='Compton effect' data-rule='0' id='question-15_0' name='question-15' type='radio' data-points='1'> <label for='question-15_0'><span class=\"advq_a_input\"><i class=\"fa fa-square-o\" aria-hidden=\"true\"><\/i><\/span>Compton effect<\/label><\/li><li class=\"quiz_unselected_answer\"><input data-value='Annihilation of matter' data-rule='0' id='question-15_1' name='question-15' type='radio' data-points='1'> <label for='question-15_1'><span class=\"advq_a_input\"><i class=\"fa fa-square-o\" aria-hidden=\"true\"><\/i><\/span>Annihilation of matter<\/label><\/li><li class=\"quiz_unselected_answer\"><input data-value='X-rays productions' data-rule='1' id='question-15_2' name='question-15' type='radio' data-points='1'> <label for='question-15_2'><span class=\"advq_a_input\"><i class=\"fa fa-square-o\" aria-hidden=\"true\"><\/i><\/span>X-rays productions<\/label><\/li><li class=\"quiz_unselected_answer\"><input data-value='Pair production ' data-rule='0' id='question-15_3' name='question-15' type='radio' data-points='1'> <label for='question-15_3'><span class=\"advq_a_input\"><i class=\"fa fa-square-o\" aria-hidden=\"true\"><\/i><\/span>Pair production <\/label><\/li><\/ul><\/div><\/div><div  data-mandatory=\"\" class=\"advq_question_container \" ><div class=\"advq_question_wrap\"><div class=\"advq_question\" data-question-id=\"question-6\" >X rays are similar in nature to:<\/div><ul data-priority=\"normal\" data-type=\"radio\" data-relation=\"ignore\" class=\"advq_question_list\" data-question-id=\"question-6\"><li class=\"quiz_unselected_answer\"><input data-value='Positive rays' data-rule='0' id='question-6_0' name='question-6' type='radio' data-points='1'> <label for='question-6_0'><span class=\"advq_a_input\"><i class=\"fa fa-square-o\" aria-hidden=\"true\"><\/i><\/span>Positive rays<\/label><\/li><li class=\"quiz_unselected_answer\"><input data-value='Gama rays' data-rule='1' id='question-6_1' name='question-6' type='radio' data-points='1'> <label for='question-6_1'><span class=\"advq_a_input\"><i class=\"fa fa-square-o\" aria-hidden=\"true\"><\/i><\/span>Gama rays<\/label><\/li><li class=\"quiz_unselected_answer\"><input data-value='Alpha rays' data-rule='0' id='question-6_2' name='question-6' type='radio' data-points='1'> <label for='question-6_2'><span class=\"advq_a_input\"><i class=\"fa fa-square-o\" aria-hidden=\"true\"><\/i><\/span>Alpha rays<\/label><\/li><li class=\"quiz_unselected_answer\"><input data-value='Cathode rays' data-rule='0' id='question-6_3' name='question-6' type='radio' data-points='1'> <label for='question-6_3'><span class=\"advq_a_input\"><i class=\"fa fa-square-o\" aria-hidden=\"true\"><\/i><\/span>Cathode rays<\/label><\/li><\/ul><\/div><\/div><div  data-mandatory=\"\" class=\"advq_question_container \" ><div class=\"advq_question_wrap\"><div class=\"advq_question\" data-question-id=\"question-8\" >LASER action can\u2019t be achieved without: <\/div><ul data-priority=\"normal\" data-type=\"radio\" data-relation=\"ignore\" class=\"advq_question_list\" data-question-id=\"question-8\"><li class=\"quiz_unselected_answer\"><input data-value='All of them' data-rule='0' id='question-8_0' name='question-8' type='radio' data-points='1'> <label for='question-8_0'><span class=\"advq_a_input\"><i class=\"fa fa-square-o\" aria-hidden=\"true\"><\/i><\/span>All of them<\/label><\/li><li class=\"quiz_unselected_answer\"><input data-value='Population inversion' data-rule='1' id='question-8_1' name='question-8' type='radio' data-points='1'> <label for='question-8_1'><span class=\"advq_a_input\"><i class=\"fa fa-square-o\" aria-hidden=\"true\"><\/i><\/span>Population inversion<\/label><\/li><li class=\"quiz_unselected_answer\"><input data-value='Induced emission' data-rule='0' id='question-8_2' name='question-8' type='radio' data-points='1'> <label for='question-8_2'><span class=\"advq_a_input\"><i class=\"fa fa-square-o\" aria-hidden=\"true\"><\/i><\/span>Induced emission<\/label><\/li><li class=\"quiz_unselected_answer\"><input data-value='Spontaneous emission' data-rule='0' id='question-8_3' name='question-8' type='radio' data-points='1'> <label for='question-8_3'><span class=\"advq_a_input\"><i class=\"fa fa-square-o\" aria-hidden=\"true\"><\/i><\/span>Spontaneous emission<\/label><\/li><\/ul><\/div><\/div><div  data-mandatory=\"\" class=\"advq_question_container \" ><div class=\"advq_question_wrap\"><div class=\"advq_question\" data-question-id=\"question-3\" >In excited state the total energy is E, what is K.E with proper sign?<\/div><ul data-priority=\"normal\" data-type=\"radio\" data-relation=\"ignore\" class=\"advq_question_list\" data-question-id=\"question-3\"><li class=\"quiz_unselected_answer\"><input data-value='2E' data-rule='0' id='question-3_0' name='question-3' type='radio' data-points='1'> <label for='question-3_0'><span class=\"advq_a_input\"><i class=\"fa fa-square-o\" aria-hidden=\"true\"><\/i><\/span>2E<\/label><\/li><li class=\"quiz_unselected_answer\"><input data-value='-E\/2' data-rule='0' id='question-3_1' name='question-3' type='radio' data-points='1'> <label for='question-3_1'><span class=\"advq_a_input\"><i class=\"fa fa-square-o\" aria-hidden=\"true\"><\/i><\/span>-E\/2<\/label><\/li><li class=\"quiz_unselected_answer\"><input data-value='-E' data-rule='1' id='question-3_2' name='question-3' type='radio' data-points='1'> <label for='question-3_2'><span class=\"advq_a_input\"><i class=\"fa fa-square-o\" aria-hidden=\"true\"><\/i><\/span>-E<\/label><\/li><li class=\"quiz_unselected_answer\"><input data-value='2\/E' data-rule='0' id='question-3_3' name='question-3' type='radio' data-points='1'> <label for='question-3_3'><span class=\"advq_a_input\"><i class=\"fa fa-square-o\" aria-hidden=\"true\"><\/i><\/span>2\/E<\/label><\/li><\/ul><\/div><\/div><div  data-mandatory=\"\" class=\"advq_question_container \" ><div class=\"advq_question_wrap\"><div class=\"advq_question\" data-question-id=\"question-10\" >In He-Ne laser, the lasing action is produced by:<\/div><ul data-priority=\"normal\" data-type=\"radio\" data-relation=\"ignore\" class=\"advq_question_list\" data-question-id=\"question-10\"><li class=\"quiz_unselected_answer\"><input data-value='Electrons of He' data-rule='0' id='question-10_0' name='question-10' type='radio' data-points='1'> <label for='question-10_0'><span class=\"advq_a_input\"><i class=\"fa fa-square-o\" aria-hidden=\"true\"><\/i><\/span>Electrons of He<\/label><\/li><li class=\"quiz_unselected_answer\"><input data-value='Ne only' data-rule='1' id='question-10_1' name='question-10' type='radio' data-points='1'> <label for='question-10_1'><span class=\"advq_a_input\"><i class=\"fa fa-square-o\" aria-hidden=\"true\"><\/i><\/span>Ne only<\/label><\/li><li class=\"quiz_unselected_answer\"><input data-value='Electrons of Ne' data-rule='0' id='question-10_2' name='question-10' type='radio' data-points='1'> <label for='question-10_2'><span class=\"advq_a_input\"><i class=\"fa fa-square-o\" aria-hidden=\"true\"><\/i><\/span>Electrons of Ne<\/label><\/li><li class=\"quiz_unselected_answer\"><input data-value='He-Ne both' data-rule='0' id='question-10_3' name='question-10' type='radio' data-points='1'> <label for='question-10_3'><span class=\"advq_a_input\"><i class=\"fa fa-square-o\" aria-hidden=\"true\"><\/i><\/span>He-Ne both<\/label><\/li><\/ul><\/div><\/div><div  data-mandatory=\"\" class=\"advq_question_container \" ><div class=\"advq_question_wrap\"><div class=\"advq_question\" data-question-id=\"question-13\" >The energy required to remove an electron in a hydrogen atom from n=10 state is:<\/div><ul data-priority=\"normal\" data-type=\"radio\" data-relation=\"ignore\" class=\"advq_question_list\" data-question-id=\"question-13\"><li class=\"quiz_unselected_answer\"><input data-value='1.36 eV' data-rule='0' id='question-13_0' name='question-13' type='radio' data-points='1'> <label for='question-13_0'><span class=\"advq_a_input\"><i class=\"fa fa-square-o\" aria-hidden=\"true\"><\/i><\/span>1.36 eV<\/label><\/li><li class=\"quiz_unselected_answer\"><input data-value='0.0136 eV' data-rule='0' id='question-13_1' name='question-13' type='radio' data-points='1'> <label for='question-13_1'><span class=\"advq_a_input\"><i class=\"fa fa-square-o\" aria-hidden=\"true\"><\/i><\/span>0.0136 eV<\/label><\/li><li class=\"quiz_unselected_answer\"><input data-value='13.6 eV' data-rule='0' id='question-13_2' name='question-13' type='radio' data-points='1'> <label for='question-13_2'><span class=\"advq_a_input\"><i class=\"fa fa-square-o\" aria-hidden=\"true\"><\/i><\/span>13.6 eV<\/label><\/li><li class=\"quiz_unselected_answer\"><input data-value='0.136 eV' data-rule='1' id='question-13_3' name='question-13' type='radio' data-points='1'> <label for='question-13_3'><span class=\"advq_a_input\"><i class=\"fa fa-square-o\" 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Spectrum is the set of frequencies absorbed or emitted by a substance. The Spectrum of Hydrogen is studied here and it has 5 series. In addition to Rutherford\u2019s atomic model, Bohr proposed an &hellip;<\/p>\n","protected":false},"author":2,"featured_media":336,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[3],"tags":[],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/talib.pk\/test-preparation\/wp-json\/wp\/v2\/posts\/335"}],"collection":[{"href":"https:\/\/talib.pk\/test-preparation\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/talib.pk\/test-preparation\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/talib.pk\/test-preparation\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/talib.pk\/test-preparation\/wp-json\/wp\/v2\/comments?post=335"}],"version-history":[{"count":0,"href":"https:\/\/talib.pk\/test-preparation\/wp-json\/wp\/v2\/posts\/335\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/talib.pk\/test-preparation\/wp-json\/wp\/v2\/media\/336"}],"wp:attachment":[{"href":"https:\/\/talib.pk\/test-preparation\/wp-json\/wp\/v2\/media?parent=335"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/talib.pk\/test-preparation\/wp-json\/wp\/v2\/categories?post=335"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/talib.pk\/test-preparation\/wp-json\/wp\/v2\/tags?post=335"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}