{"id":89626,"date":"2025-06-01T10:09:21","date_gmt":"2025-06-01T10:09:21","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=89626"},"modified":"2025-06-01T10:09:21","modified_gmt":"2025-06-01T10:09:21","slug":"advanced-sunrise-and-delayed-sun-set-found-in-the-sky-are-due-to-the-p","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/advanced-sunrise-and-delayed-sun-set-found-in-the-sky-are-due-to-the-p\/","title":{"rendered":"Advanced sunrise and delayed sun-set found in the sky are due to the p"},"content":{"rendered":"

Advanced sunrise and delayed sun-set found in the sky are due to the phenomenon of<\/p>\n

[amp_mcq option1=”diffraction of sunlight” option2=”refraction of sunlight” option3=”scattering of sunlight” option4=”total internal reflection of sun-light” correct=”option2″]<\/p>\n

\n
\n
This question was previously asked in<\/div>\n
UPSC CAPF – 2013<\/div>\n<\/div>\n
Download PDF<\/a>Attempt Online<\/a><\/div>\n<\/div>\n
\nThe correct option is B. Advanced sunrise and delayed sunset are due to the phenomenon of refraction of sunlight.
\n<\/section>\n
\nAs sunlight enters the Earth’s atmosphere, it passes through layers of air with varying densities. This causes the light rays to bend, or refract. Near the horizon, where sunlight travels through a larger amount of atmosphere, this refraction is significant. The atmosphere bends the light rays downwards, towards the Earth’s surface. This bending makes the Sun appear higher in the sky than its actual position. As a result, we see the Sun before it has actually risen above the horizon (advanced sunrise) and after it has actually set below the horizon (delayed sunset).
\n<\/section>\n
\nRefraction causes the apparent position of the Sun to be about 0.5 degrees higher than its true position when it is near the horizon. This leads to sunrise appearing about two minutes earlier and sunset about two minutes later than they would in the absence of atmospheric refraction. Diffraction is the bending of light around obstacles. Scattering is the redirection of light by particles. Total internal reflection requires specific conditions involving light moving from a denser to a rarer medium.
\n<\/section>\n","protected":false},"excerpt":{"rendered":"

Advanced sunrise and delayed sun-set found in the sky are due to the phenomenon of [amp_mcq option1=”diffraction of sunlight” option2=”refraction of sunlight” option3=”scattering of sunlight” option4=”total internal reflection of sun-light” correct=”option2″] This question was previously asked in UPSC CAPF – 2013 Download PDFAttempt Online The correct option is B. Advanced sunrise and delayed sunset are … <\/p>\n

Detailed SolutionAdvanced sunrise and delayed sun-set found in the sky are due to the p<\/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":[1467,1153,1128],"class_list":["post-89626","post","type-post","status-publish","format-standard","hentry","category-upsc-capf","tag-1467","tag-optics","tag-physics","no-featured-image-padding"],"yoast_head":"\nAdvanced sunrise and delayed sun-set found in the sky are due to the p<\/title>\n<meta name=\"description\" content=\"The correct option is B. Advanced sunrise and delayed sunset are due to the phenomenon of refraction of sunlight. As sunlight enters the Earth's atmosphere, it passes through layers of air with varying densities. This causes the light rays to bend, or refract. Near the horizon, where sunlight travels through a larger amount of atmosphere, this refraction is significant. The atmosphere bends the light rays downwards, towards the Earth's surface. This bending makes the Sun appear higher in the sky than its actual position. As a result, we see the Sun before it has actually risen above the horizon (advanced sunrise) and after it has actually set below the horizon (delayed sunset).\" \/>\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\/advanced-sunrise-and-delayed-sun-set-found-in-the-sky-are-due-to-the-p\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Advanced sunrise and delayed sun-set found in the sky are due to the p\" \/>\n<meta property=\"og:description\" content=\"The correct option is B. Advanced sunrise and delayed sunset are due to the phenomenon of refraction of sunlight. As sunlight enters the Earth's atmosphere, it passes through layers of air with varying densities. This causes the light rays to bend, or refract. Near the horizon, where sunlight travels through a larger amount of atmosphere, this refraction is significant. The atmosphere bends the light rays downwards, towards the Earth's surface. This bending makes the Sun appear higher in the sky than its actual position. As a result, we see the Sun before it has actually risen above the horizon (advanced sunrise) and after it has actually set below the horizon (delayed sunset).\" \/>\n<meta property=\"og:url\" content=\"https:\/\/exam.pscnotes.com\/mcq\/advanced-sunrise-and-delayed-sun-set-found-in-the-sky-are-due-to-the-p\/\" \/>\n<meta property=\"og:site_name\" content=\"MCQ and Quiz for Exams\" \/>\n<meta property=\"article:published_time\" content=\"2025-06-01T10:09:21+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":"Advanced sunrise and delayed sun-set found in the sky are due to the p","description":"The correct option is B. 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As a result, we see the Sun before it has actually risen above the horizon (advanced sunrise) and after it has actually set below the horizon (delayed sunset).","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\/advanced-sunrise-and-delayed-sun-set-found-in-the-sky-are-due-to-the-p\/","og_locale":"en_US","og_type":"article","og_title":"Advanced sunrise and delayed sun-set found in the sky are due to the p","og_description":"The correct option is B. Advanced sunrise and delayed sunset are due to the phenomenon of refraction of sunlight. As sunlight enters the Earth's atmosphere, it passes through layers of air with varying densities. This causes the light rays to bend, or refract. Near the horizon, where sunlight travels through a larger amount of atmosphere, this refraction is significant. The atmosphere bends the light rays downwards, towards the Earth's surface. This bending makes the Sun appear higher in the sky than its actual position. 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Advanced sunrise and delayed sunset are due to the phenomenon of refraction of sunlight. As sunlight enters the Earth's atmosphere, it passes through layers of air with varying densities. This causes the light rays to bend, or refract. Near the horizon, where sunlight travels through a larger amount of atmosphere, this refraction is significant. The atmosphere bends the light rays downwards, towards the Earth's surface. This bending makes the Sun appear higher in the sky than its actual position. 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