{"id":85703,"date":"2025-06-01T03:25:08","date_gmt":"2025-06-01T03:25:08","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=85703"},"modified":"2025-06-01T03:25:08","modified_gmt":"2025-06-01T03:25:08","slug":"infrared-visible-and-ultraviolet-radiations-light-have-different-pro","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/infrared-visible-and-ultraviolet-radiations-light-have-different-pro\/","title":{"rendered":"Infrared, visible and ultraviolet radiations\/ light have different pro"},"content":{"rendered":"

Infrared, visible and ultraviolet radiations\/ light have different properties. Which one of the following statements related to these radiations\/light is not correct?<\/p>\n

[amp_mcq option1=”The wavelength of infrared is more than that of ultraviolet radiation.” option2=”The wavelength of ultraviolet is smaller than that of visible light.” option3=”The photon energy of visible light is more than that of infrared light.” option4=”The photon energy of ultraviolet is lesser than that of visible light.” correct=”option4″]<\/p>\n

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This question was previously asked in<\/div>\n
UPSC CDS-2 – 2017<\/div>\n<\/div>\n
Download PDF<\/a>Attempt Online<\/a><\/div>\n<\/div>\n
\nThe statement “The photon energy of ultraviolet is lesser than that of visible light” is not correct.
\n<\/section>\n
\nElectromagnetic radiations are ordered by their frequency or wavelength. In order of increasing energy (and frequency, and decreasing wavelength), the spectrum goes from Infrared (IR) to Visible light to Ultraviolet (UV). Photon energy is directly proportional to frequency (E = hf) and inversely proportional to wavelength (E = hc\/\u03bb). Therefore, UV radiation has higher frequency, higher photon energy, and shorter wavelength compared to visible light and infrared radiation.
\n<\/section>\n
\nStatement A is correct because IR has a longer wavelength than UV. Statement B is correct because UV has a shorter wavelength than visible light. Statement C is correct because visible light has higher energy than IR. Statement D claims UV energy is lesser than visible light energy, which is false; UV energy is higher than visible light energy.
\n<\/section>\n","protected":false},"excerpt":{"rendered":"

Infrared, visible and ultraviolet radiations\/ light have different properties. Which one of the following statements related to these radiations\/light is not correct? [amp_mcq option1=”The wavelength of infrared is more than that of ultraviolet radiation.” option2=”The wavelength of ultraviolet is smaller than that of visible light.” option3=”The photon energy of visible light is more than that … <\/p>\n

Detailed SolutionInfrared, visible and ultraviolet radiations\/ light have different pro<\/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":[1088],"tags":[1101,1153,1128],"class_list":["post-85703","post","type-post","status-publish","format-standard","hentry","category-upsc-cds-2","tag-1101","tag-optics","tag-physics","no-featured-image-padding"],"yoast_head":"\nInfrared, visible and ultraviolet radiations\/ light have different pro<\/title>\n<meta name=\"description\" content=\"The statement "The photon energy of ultraviolet is lesser than that of visible light" is not correct. Electromagnetic radiations are ordered by their frequency or wavelength. In order of increasing energy (and frequency, and decreasing wavelength), the spectrum goes from Infrared (IR) to Visible light to Ultraviolet (UV). Photon energy is directly proportional to frequency (E = hf) and inversely proportional to wavelength (E = hc\/\u03bb). Therefore, UV radiation has higher frequency, higher photon energy, and shorter wavelength compared to visible light and infrared radiation.\" \/>\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\/infrared-visible-and-ultraviolet-radiations-light-have-different-pro\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Infrared, visible and ultraviolet radiations\/ light have different pro\" \/>\n<meta property=\"og:description\" content=\"The statement "The photon energy of ultraviolet is lesser than that of visible light" is not correct. Electromagnetic radiations are ordered by their frequency or wavelength. In order of increasing energy (and frequency, and decreasing wavelength), the spectrum goes from Infrared (IR) to Visible light to Ultraviolet (UV). Photon energy is directly proportional to frequency (E = hf) and inversely proportional to wavelength (E = hc\/\u03bb). Therefore, UV radiation has higher frequency, higher photon energy, and shorter wavelength compared to visible light and infrared radiation.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/exam.pscnotes.com\/mcq\/infrared-visible-and-ultraviolet-radiations-light-have-different-pro\/\" \/>\n<meta property=\"og:site_name\" content=\"MCQ and Quiz for Exams\" \/>\n<meta property=\"article:published_time\" content=\"2025-06-01T03:25:08+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":"Infrared, visible and ultraviolet radiations\/ light have different pro","description":"The statement \"The photon energy of ultraviolet is lesser than that of visible light\" is not correct. 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Therefore, UV radiation has higher frequency, higher photon energy, and shorter wavelength compared to visible light and infrared radiation.","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\/infrared-visible-and-ultraviolet-radiations-light-have-different-pro\/","og_locale":"en_US","og_type":"article","og_title":"Infrared, visible and ultraviolet radiations\/ light have different pro","og_description":"The statement \"The photon energy of ultraviolet is lesser than that of visible light\" is not correct. Electromagnetic radiations are ordered by their frequency or wavelength. In order of increasing energy (and frequency, and decreasing wavelength), the spectrum goes from Infrared (IR) to Visible light to Ultraviolet (UV). 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Electromagnetic radiations are ordered by their frequency or wavelength. In order of increasing energy (and frequency, and decreasing wavelength), the spectrum goes from Infrared (IR) to Visible light to Ultraviolet (UV). Photon energy is directly proportional to frequency (E = hf) and inversely proportional to wavelength (E = hc\/\u03bb). 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