{"id":91129,"date":"2025-06-01T10:47:28","date_gmt":"2025-06-01T10:47:28","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=91129"},"modified":"2025-06-01T10:47:28","modified_gmt":"2025-06-01T10:47:28","slug":"rainbow-is-produced-when-sunlight-falls-on-drops-of-rain-which-of-the","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/rainbow-is-produced-when-sunlight-falls-on-drops-of-rain-which-of-the\/","title":{"rendered":"Rainbow is produced when sunlight falls on drops of rain. Which of the"},"content":{"rendered":"<p>Rainbow is produced when sunlight falls on drops of rain. Which of the following physical phenomena are responsible for this?<\/p>\n<ul>\n<li>1. Dispersion<\/li>\n<li>2. Refraction<\/li>\n<li>3. Internal reflection<\/li>\n<\/ul>\n<p>Select the correct answer using the codes given below.<\/p>\n<p>[amp_mcq option1=&#8221;1 and 2 only&#8221; option2=&#8221;2 and 3 only&#8221; option3=&#8221;1 and 3 only&#8221; option4=&#8221;1, 2 and 3&#8243; correct=&#8221;option4&#8243;]<\/p>\n<div class=\"psc-box-pyq-exam-year-detail\">\n<div class=\"pyq-exam\">\n<div class=\"psc-heading\">This question was previously asked in<\/div>\n<div class=\"psc-title line-ellipsis\">UPSC IAS &#8211; 2013<\/div>\n<\/div>\n<div class=\"pyq-exam-psc-buttons\"><a href=\"\/pyq\/pyq-upsc-ias-2013.pdf\" target=\"_blank\" class=\"psc-pdf-button\" rel=\"noopener\">Download PDF<\/a><a href=\"\/pyq-upsc-ias-2013\" target=\"_blank\" class=\"psc-attempt-button\" rel=\"noopener\">Attempt Online<\/a><\/div>\n<\/div>\n<section id=\"pyq-correct-answer\">Rainbow is produced when sunlight falls on drops of rain, and the phenomena responsible are dispersion, refraction, and internal reflection.<\/section>\n<section id=\"pyq-key-points\">When sunlight enters a raindrop, it is refracted (bent). As the light enters, it also undergoes dispersion, splitting into its constituent colours because different wavelengths of light are refracted at slightly different angles. The dispersed light then reflects off the back inner surface of the raindrop (internal reflection). Finally, the light is refracted again as it exits the raindrop towards the observer. All three processes are essential for the formation of a rainbow.<\/section>\n<section id=\"pyq-additional_information\">Primary rainbows are formed by light undergoing one internal reflection. Secondary rainbows, which are fainter and appear above the primary rainbow with the colours reversed, are formed by light undergoing two internal reflections. In both cases, refraction and dispersion occur at the air-water interfaces.<\/section>\n","protected":false},"excerpt":{"rendered":"<p>Rainbow is produced when sunlight falls on drops of rain. Which of the following physical phenomena are responsible for this? 1. Dispersion 2. Refraction 3. Internal reflection Select the correct answer using the codes given below. [amp_mcq option1=&#8221;1 and 2 only&#8221; option2=&#8221;2 and 3 only&#8221; option3=&#8221;1 and 3 only&#8221; option4=&#8221;1, 2 and 3&#8243; correct=&#8221;option4&#8243;] This &#8230; <\/p>\n<p class=\"read-more-container\"><a title=\"Rainbow is produced when sunlight falls on drops of rain. Which of the\" class=\"read-more button\" href=\"https:\/\/exam.pscnotes.com\/mcq\/rainbow-is-produced-when-sunlight-falls-on-drops-of-rain-which-of-the\/#more-91129\">Detailed Solution<span class=\"screen-reader-text\">Rainbow is produced when sunlight falls on drops of rain. Which of the<\/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":[1092],"tags":[1467,1153,1128],"class_list":["post-91129","post","type-post","status-publish","format-standard","hentry","category-upsc-ias","tag-1467","tag-optics","tag-physics","no-featured-image-padding"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v22.2 (Yoast SEO v23.3) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Rainbow is produced when sunlight falls on drops of rain. Which of the<\/title>\n<meta name=\"description\" content=\"Rainbow is produced when sunlight falls on drops of rain, and the phenomena responsible are dispersion, refraction, and internal reflection. When sunlight enters a raindrop, it is refracted (bent). As the light enters, it also undergoes dispersion, splitting into its constituent colours because different wavelengths of light are refracted at slightly different angles. The dispersed light then reflects off the back inner surface of the raindrop (internal reflection). Finally, the light is refracted again as it exits the raindrop towards the observer. All three processes are essential for the formation of a rainbow.\" \/>\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\/rainbow-is-produced-when-sunlight-falls-on-drops-of-rain-which-of-the\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Rainbow is produced when sunlight falls on drops of rain. Which of the\" \/>\n<meta property=\"og:description\" content=\"Rainbow is produced when sunlight falls on drops of rain, and the phenomena responsible are dispersion, refraction, and internal reflection. When sunlight enters a raindrop, it is refracted (bent). As the light enters, it also undergoes dispersion, splitting into its constituent colours because different wavelengths of light are refracted at slightly different angles. The dispersed light then reflects off the back inner surface of the raindrop (internal reflection). Finally, the light is refracted again as it exits the raindrop towards the observer. All three processes are essential for the formation of a rainbow.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/exam.pscnotes.com\/mcq\/rainbow-is-produced-when-sunlight-falls-on-drops-of-rain-which-of-the\/\" \/>\n<meta property=\"og:site_name\" content=\"MCQ and Quiz for Exams\" \/>\n<meta property=\"article:published_time\" content=\"2025-06-01T10:47:28+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":"Rainbow is produced when sunlight falls on drops of rain. Which of the","description":"Rainbow is produced when sunlight falls on drops of rain, and the phenomena responsible are dispersion, refraction, and internal reflection. When sunlight enters a raindrop, it is refracted (bent). As the light enters, it also undergoes dispersion, splitting into its constituent colours because different wavelengths of light are refracted at slightly different angles. The dispersed light then reflects off the back inner surface of the raindrop (internal reflection). Finally, the light is refracted again as it exits the raindrop towards the observer. All three processes are essential for the formation of a rainbow.","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\/rainbow-is-produced-when-sunlight-falls-on-drops-of-rain-which-of-the\/","og_locale":"en_US","og_type":"article","og_title":"Rainbow is produced when sunlight falls on drops of rain. Which of the","og_description":"Rainbow is produced when sunlight falls on drops of rain, and the phenomena responsible are dispersion, refraction, and internal reflection. When sunlight enters a raindrop, it is refracted (bent). As the light enters, it also undergoes dispersion, splitting into its constituent colours because different wavelengths of light are refracted at slightly different angles. The dispersed light then reflects off the back inner surface of the raindrop (internal reflection). 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