{"id":90469,"date":"2025-06-01T10:29:11","date_gmt":"2025-06-01T10:29:11","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=90469"},"modified":"2025-06-01T10:29:11","modified_gmt":"2025-06-01T10:29:11","slug":"which-one-of-the-following-statements-on-photoelectric-effect-is-not-c","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/which-one-of-the-following-statements-on-photoelectric-effect-is-not-c\/","title":{"rendered":"Which one of the following statements on photoelectric effect is NOT c"},"content":{"rendered":"

Which one of the following statements on photoelectric effect is NOT correct ?<\/p>\n

[amp_mcq option1=”Albert Einstein received the Nobel Prize in Physics for explaining photoelectric effect” option2=”For each metal, there is a threshold frequency v\u2080 below which this effect is not observed” option3=”At a frequency v > v\u2080, the kinetic energy of ejected electrons does not change on increasing the frequency of incident light” option4=”The number of electrons ejected is proportional to the intensity of incident light” correct=”option3″]<\/p>\n

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This question was previously asked in<\/div>\n
UPSC CAPF – 2020<\/div>\n<\/div>\n
Download PDF<\/a>Attempt Online<\/a><\/div>\n<\/div>\n
\nThe statement “At a frequency v > v\u2080, the kinetic energy of ejected electrons does not change on increasing the frequency of incident light” is NOT correct.
\n<\/section>\n
\nAccording to Einstein’s explanation of the photoelectric effect, the maximum kinetic energy (KE_max) of the ejected electrons is given by KE_max = h(v – v\u2080), where h is Planck’s constant, v is the frequency of incident light, and v\u2080 is the threshold frequency. This equation shows that for v > v\u2080, the maximum kinetic energy is directly proportional to the frequency of the incident light; increasing v leads to increased KE_max.
\n<\/section>\n
\nStatement A is correct; Einstein received the Nobel Prize in Physics in 1921 for his explanation of the photoelectric effect. Statement B is correct; a minimum frequency (threshold frequency) is required for electron emission. Statement D is correct; the number of emitted electrons is proportional to the intensity of the incident light (for v > v\u2080), as higher intensity means more photons striking the surface.
\n<\/section>\n","protected":false},"excerpt":{"rendered":"

Which one of the following statements on photoelectric effect is NOT correct ? [amp_mcq option1=”Albert Einstein received the Nobel Prize in Physics for explaining photoelectric effect” option2=”For each metal, there is a threshold frequency v\u2080 below which this effect is not observed” option3=”At a frequency v > v\u2080, the kinetic energy of ejected electrons does … <\/p>\n

Detailed SolutionWhich one of the following statements on photoelectric effect is NOT c<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1085],"tags":[1288,1153,1128],"class_list":["post-90469","post","type-post","status-publish","format-standard","hentry","category-upsc-capf","tag-1288","tag-optics","tag-physics","no-featured-image-padding"],"yoast_head":"\nWhich one of the following statements on photoelectric effect is NOT c<\/title>\n<meta name=\"description\" content=\"The statement "At a frequency v > v\u2080, the kinetic energy of ejected electrons does not change on increasing the frequency of incident light" is NOT correct. According to Einstein's explanation of the photoelectric effect, the maximum kinetic energy (KE_max) of the ejected electrons is given by KE_max = h(v - v\u2080), where h is Planck's constant, v is the frequency of incident light, and v\u2080 is the threshold frequency. This equation shows that for v > v\u2080, the maximum kinetic energy is directly proportional to the frequency of the incident light; increasing v leads to increased KE_max.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/exam.pscnotes.com\/mcq\/which-one-of-the-following-statements-on-photoelectric-effect-is-not-c\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Which one of the following statements on photoelectric effect is NOT c\" \/>\n<meta property=\"og:description\" content=\"The statement "At a frequency v > v\u2080, the kinetic energy of ejected electrons does not change on increasing the frequency of incident light" is NOT correct. According to Einstein's explanation of the photoelectric effect, the maximum kinetic energy (KE_max) of the ejected electrons is given by KE_max = h(v - v\u2080), where h is Planck's constant, v is the frequency of incident light, and v\u2080 is the threshold frequency. This equation shows that for v > v\u2080, the maximum kinetic energy is directly proportional to the frequency of the incident light; increasing v leads to increased KE_max.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/exam.pscnotes.com\/mcq\/which-one-of-the-following-statements-on-photoelectric-effect-is-not-c\/\" \/>\n<meta property=\"og:site_name\" content=\"MCQ and Quiz for Exams\" \/>\n<meta property=\"article:published_time\" content=\"2025-06-01T10:29:11+00:00\" \/>\n<meta name=\"author\" content=\"rawan239\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"rawan239\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"Which one of the following statements on photoelectric effect is NOT c","description":"The statement \"At a frequency v > v\u2080, the kinetic energy of ejected electrons does not change on increasing the frequency of incident light\" is NOT correct. According to Einstein's explanation of the photoelectric effect, the maximum kinetic energy (KE_max) of the ejected electrons is given by KE_max = h(v - v\u2080), where h is Planck's constant, v is the frequency of incident light, and v\u2080 is the threshold frequency. This equation shows that for v > v\u2080, the maximum kinetic energy is directly proportional to the frequency of the incident light; increasing v leads to increased KE_max.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/exam.pscnotes.com\/mcq\/which-one-of-the-following-statements-on-photoelectric-effect-is-not-c\/","og_locale":"en_US","og_type":"article","og_title":"Which one of the following statements on photoelectric effect is NOT c","og_description":"The statement \"At a frequency v > v\u2080, the kinetic energy of ejected electrons does not change on increasing the frequency of incident light\" is NOT correct. According to Einstein's explanation of the photoelectric effect, the maximum kinetic energy (KE_max) of the ejected electrons is given by KE_max = h(v - v\u2080), where h is Planck's constant, v is the frequency of incident light, and v\u2080 is the threshold frequency. This equation shows that for v > v\u2080, the maximum kinetic energy is directly proportional to the frequency of the incident light; increasing v leads to increased KE_max.","og_url":"https:\/\/exam.pscnotes.com\/mcq\/which-one-of-the-following-statements-on-photoelectric-effect-is-not-c\/","og_site_name":"MCQ and Quiz for Exams","article_published_time":"2025-06-01T10:29:11+00:00","author":"rawan239","twitter_card":"summary_large_image","twitter_misc":{"Written by":"rawan239","Est. reading time":"1 minute"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/exam.pscnotes.com\/mcq\/which-one-of-the-following-statements-on-photoelectric-effect-is-not-c\/","url":"https:\/\/exam.pscnotes.com\/mcq\/which-one-of-the-following-statements-on-photoelectric-effect-is-not-c\/","name":"Which one of the following statements on photoelectric effect is NOT c","isPartOf":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#website"},"datePublished":"2025-06-01T10:29:11+00:00","dateModified":"2025-06-01T10:29:11+00:00","author":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#\/schema\/person\/5807dafeb27d2ec82344d6cbd6c3d209"},"description":"The statement \"At a frequency v > v\u2080, the kinetic energy of ejected electrons does not change on increasing the frequency of incident light\" is NOT correct. According to Einstein's explanation of the photoelectric effect, the maximum kinetic energy (KE_max) of the ejected electrons is given by KE_max = h(v - v\u2080), where h is Planck's constant, v is the frequency of incident light, and v\u2080 is the threshold frequency. 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