{"id":87268,"date":"2025-06-01T06:39:00","date_gmt":"2025-06-01T06:39:00","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=87268"},"modified":"2025-06-01T06:39:00","modified_gmt":"2025-06-01T06:39:00","slug":"a-ray-of-light-when-refracted-suffers-change-in-velocity-in-this-cont","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/a-ray-of-light-when-refracted-suffers-change-in-velocity-in-this-cont\/","title":{"rendered":"A ray of light when refracted suffers change in velocity. In this cont"},"content":{"rendered":"

A ray of light when refracted suffers change in velocity. In this context, which one among the following statements is correct ?<\/p>\n

[amp_mcq option1=”Velocity increases as the ray passes from a rarer to a denser medium” option2=”Velocity decreases as the ray passes from a denser to a rarer medium” option3=”Velocity decreases as the ray passes from a rarer to a denser medium” option4=”Change of velocity does not depend on the nature of medium” correct=”option3″]<\/p>\n

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\n
This question was previously asked in<\/div>\n
UPSC NDA-1 – 2015<\/div>\n<\/div>\n
Download PDF<\/a>Attempt Online<\/a><\/div>\n<\/div>\n
\nWhen a ray of light passes from a rarer medium (like air) to a denser medium (like glass or water), its speed decreases. This change in speed is related to the refractive index of the medium; a denser medium has a higher refractive index, causing light to slow down. Conversely, when light passes from a denser medium to a rarer medium, its speed increases.
\n<\/section>\n
\nUnderstanding how the speed of light changes when it undergoes refraction from one medium to another.
\n<\/section>\n
\nThe relationship between the speed of light ($v$), the speed of light in vacuum ($c$), and the refractive index ($n$) of a medium is given by $v = c\/n$. A denser medium has a higher refractive index ($n$), resulting in a lower speed of light ($v$). A rarer medium has a lower refractive index, resulting in a higher speed of light.
\n<\/section>\n","protected":false},"excerpt":{"rendered":"

A ray of light when refracted suffers change in velocity. In this context, which one among the following statements is correct ? [amp_mcq option1=”Velocity increases as the ray passes from a rarer to a denser medium” option2=”Velocity decreases as the ray passes from a denser to a rarer medium” option3=”Velocity decreases as the ray passes … <\/p>\n

Detailed SolutionA ray of light when refracted suffers change in velocity. In this cont<\/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":[1093],"tags":[1443,1153,1128],"class_list":["post-87268","post","type-post","status-publish","format-standard","hentry","category-upsc-nda-1","tag-1443","tag-optics","tag-physics","no-featured-image-padding"],"yoast_head":"\nA ray of light when refracted suffers change in velocity. In this cont<\/title>\n<meta name=\"description\" content=\"When a ray of light passes from a rarer medium (like air) to a denser medium (like glass or water), its speed decreases. This change in speed is related to the refractive index of the medium; a denser medium has a higher refractive index, causing light to slow down. Conversely, when light passes from a denser medium to a rarer medium, its speed increases. Understanding how the speed of light changes when it undergoes refraction from one medium to another.\" \/>\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\/a-ray-of-light-when-refracted-suffers-change-in-velocity-in-this-cont\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"A ray of light when refracted suffers change in velocity. In this cont\" \/>\n<meta property=\"og:description\" content=\"When a ray of light passes from a rarer medium (like air) to a denser medium (like glass or water), its speed decreases. This change in speed is related to the refractive index of the medium; a denser medium has a higher refractive index, causing light to slow down. Conversely, when light passes from a denser medium to a rarer medium, its speed increases. 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