{"id":88718,"date":"2025-06-01T07:18:58","date_gmt":"2025-06-01T07:18:58","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=88718"},"modified":"2025-06-01T07:18:58","modified_gmt":"2025-06-01T07:18:58","slug":"the-sun-appears-reddish-during-sunrise-and-sunset-the-phenomenon-in-o","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/the-sun-appears-reddish-during-sunrise-and-sunset-the-phenomenon-in-o\/","title":{"rendered":"The Sun appears reddish during sunrise and sunset. The phenomenon in o"},"content":{"rendered":"

The Sun appears reddish during sunrise and sunset. The phenomenon in optics which is responsible for this appear-ance of the Sun is<\/p>\n

[amp_mcq option1=”Reflection” option2=”Total internal reflection” option3=”Scattering” option4=”Interference” correct=”option3″]<\/p>\n

\n
\n
This question was previously asked in<\/div>\n
UPSC NDA-2 – 2020<\/div>\n<\/div>\n
Download PDF<\/a>Attempt Online<\/a><\/div>\n<\/div>\n
\nThe correct answer is (C) Scattering.
\n<\/section>\n
\nThe phenomenon responsible for the reddish appearance of the Sun during sunrise and sunset is the scattering of sunlight by particles in the Earth’s atmosphere, primarily Rayleigh scattering. When the Sun is near the horizon, sunlight passes through a much longer path in the atmosphere. Shorter wavelengths of light (blue, violet) are scattered away more effectively than longer wavelengths (red, orange). As a result, the light that reaches our eyes after travelling through this longer path is enriched with longer wavelengths, making the Sun and the sky around it appear reddish.
\n<\/section>\n
\nReflection is the bouncing of light off a surface. Total internal reflection occurs when light travelling in a denser medium hits a boundary with a less dense medium at a large angle. Interference occurs when waves overlap and combine, leading to reinforcement or cancellation. While these are optical phenomena, scattering is the specific one responsible for the sky’s colour and the reddish hues of the sun at sunrise\/sunset.
\n<\/section>\n","protected":false},"excerpt":{"rendered":"

The Sun appears reddish during sunrise and sunset. The phenomenon in optics which is responsible for this appear-ance of the Sun is [amp_mcq option1=”Reflection” option2=”Total internal reflection” option3=”Scattering” option4=”Interference” correct=”option3″] This question was previously asked in UPSC NDA-2 – 2020 Download PDFAttempt Online The correct answer is (C) Scattering. The phenomenon responsible for the reddish … <\/p>\n

Detailed SolutionThe Sun appears reddish during sunrise and sunset. The phenomenon in o<\/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":[1094],"tags":[1288,1153,1128],"class_list":["post-88718","post","type-post","status-publish","format-standard","hentry","category-upsc-nda-2","tag-1288","tag-optics","tag-physics","no-featured-image-padding"],"yoast_head":"\nThe Sun appears reddish during sunrise and sunset. The phenomenon in o<\/title>\n<meta name=\"description\" content=\"The correct answer is (C) Scattering. The phenomenon responsible for the reddish appearance of the Sun during sunrise and sunset is the scattering of sunlight by particles in the Earth's atmosphere, primarily Rayleigh scattering. When the Sun is near the horizon, sunlight passes through a much longer path in the atmosphere. Shorter wavelengths of light (blue, violet) are scattered away more effectively than longer wavelengths (red, orange). As a result, the light that reaches our eyes after travelling through this longer path is enriched with longer wavelengths, making the Sun and the sky around it appear reddish.\" \/>\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\/the-sun-appears-reddish-during-sunrise-and-sunset-the-phenomenon-in-o\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"The Sun appears reddish during sunrise and sunset. The phenomenon in o\" \/>\n<meta property=\"og:description\" content=\"The correct answer is (C) Scattering. The phenomenon responsible for the reddish appearance of the Sun during sunrise and sunset is the scattering of sunlight by particles in the Earth's atmosphere, primarily Rayleigh scattering. When the Sun is near the horizon, sunlight passes through a much longer path in the atmosphere. Shorter wavelengths of light (blue, violet) are scattered away more effectively than longer wavelengths (red, orange). As a result, the light that reaches our eyes after travelling through this longer path is enriched with longer wavelengths, making the Sun and the sky around it appear reddish.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/exam.pscnotes.com\/mcq\/the-sun-appears-reddish-during-sunrise-and-sunset-the-phenomenon-in-o\/\" \/>\n<meta property=\"og:site_name\" content=\"MCQ and Quiz for Exams\" \/>\n<meta property=\"article:published_time\" content=\"2025-06-01T07:18:58+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":"The Sun appears reddish during sunrise and sunset. 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As a result, the light that reaches our eyes after travelling through this longer path is enriched with longer wavelengths, making the Sun and the sky around it appear reddish.","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\/the-sun-appears-reddish-during-sunrise-and-sunset-the-phenomenon-in-o\/","og_locale":"en_US","og_type":"article","og_title":"The Sun appears reddish during sunrise and sunset. The phenomenon in o","og_description":"The correct answer is (C) Scattering. The phenomenon responsible for the reddish appearance of the Sun during sunrise and sunset is the scattering of sunlight by particles in the Earth's atmosphere, primarily Rayleigh scattering. When the Sun is near the horizon, sunlight passes through a much longer path in the atmosphere. 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