{"id":85208,"date":"2025-06-01T03:07:50","date_gmt":"2025-06-01T03:07:50","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=85208"},"modified":"2025-06-01T03:07:50","modified_gmt":"2025-06-01T03:07:50","slug":"how-many-internal-reflections-of-light-take-place-in-the-formation-of","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/how-many-internal-reflections-of-light-take-place-in-the-formation-of\/","title":{"rendered":"How many internal reflections of light take place in the formation of"},"content":{"rendered":"

How many internal reflections of light take place in the formation of primary rainbow ?<\/p>\n

[amp_mcq option1=”0″ option2=”1″ option3=”2″ option4=”More than 2″ correct=”option2″]<\/p>\n

\n
\n
This question was previously asked in<\/div>\n
UPSC CDS-1 – 2021<\/div>\n<\/div>\n
Download PDF<\/a>Attempt Online<\/a><\/div>\n<\/div>\n
\nA primary rainbow is formed when sunlight is dispersed by water droplets. The process involves the sunlight entering a raindrop, undergoing refraction at the front surface, reflecting internally off the back surface, and finally refracting again as it exits the raindrop.
\n<\/section>\n
\nThe light path for a primary rainbow within a raindrop includes one internal reflection. The sequence is: refraction (entry) \u2192 reflection (internal) \u2192 refraction (exit). This single internal reflection, combined with refraction and dispersion, separates the light into its constituent colours, forming the rainbow arc.
\n<\/section>\n
\nA secondary rainbow, which is fainter and appears above the primary bow with reversed colours, is formed by sunlight that undergoes two internal reflections within the raindrops. Higher-order rainbows involving three or more internal reflections are theoretically possible but are rarely observed due to significant loss of light intensity.
\n<\/section>\n","protected":false},"excerpt":{"rendered":"

How many internal reflections of light take place in the formation of primary rainbow ? [amp_mcq option1=”0″ option2=”1″ option3=”2″ option4=”More than 2″ correct=”option2″] This question was previously asked in UPSC CDS-1 – 2021 Download PDFAttempt Online A primary rainbow is formed when sunlight is dispersed by water droplets. The process involves the sunlight entering a … <\/p>\n

Detailed SolutionHow many internal reflections of light take place in the formation of<\/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":[1087],"tags":[1110,1153,1128],"class_list":["post-85208","post","type-post","status-publish","format-standard","hentry","category-upsc-cds-1","tag-1110","tag-optics","tag-physics","no-featured-image-padding"],"yoast_head":"\nHow many internal reflections of light take place in the formation of<\/title>\n<meta name=\"description\" content=\"A primary rainbow is formed when sunlight is dispersed by water droplets. The process involves the sunlight entering a raindrop, undergoing refraction at the front surface, reflecting internally off the back surface, and finally refracting again as it exits the raindrop. The light path for a primary rainbow within a raindrop includes one internal reflection. The sequence is: refraction (entry) \u2192 reflection (internal) \u2192 refraction (exit). This single internal reflection, combined with refraction and dispersion, separates the light into its constituent colours, forming the rainbow arc.\" \/>\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\/how-many-internal-reflections-of-light-take-place-in-the-formation-of\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How many internal reflections of light take place in the formation of\" \/>\n<meta property=\"og:description\" content=\"A primary rainbow is formed when sunlight is dispersed by water droplets. The process involves the sunlight entering a raindrop, undergoing refraction at the front surface, reflecting internally off the back surface, and finally refracting again as it exits the raindrop. The light path for a primary rainbow within a raindrop includes one internal reflection. The sequence is: refraction (entry) \u2192 reflection (internal) \u2192 refraction (exit). This single internal reflection, combined with refraction and dispersion, separates the light into its constituent colours, forming the rainbow arc.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/exam.pscnotes.com\/mcq\/how-many-internal-reflections-of-light-take-place-in-the-formation-of\/\" \/>\n<meta property=\"og:site_name\" content=\"MCQ and Quiz for Exams\" \/>\n<meta property=\"article:published_time\" content=\"2025-06-01T03:07:50+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":"How many internal reflections of light take place in the formation of","description":"A primary rainbow is formed when sunlight is dispersed by water droplets. 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