{"id":85607,"date":"2025-06-01T03:22:42","date_gmt":"2025-06-01T03:22:42","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=85607"},"modified":"2025-06-01T03:22:42","modified_gmt":"2025-06-01T03:22:42","slug":"in-total-internal-reflection-the-light-travels-from","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/in-total-internal-reflection-the-light-travels-from\/","title":{"rendered":"In total internal reflection, the light travels from"},"content":{"rendered":"

In total internal reflection, the light travels from<\/p>\n

[amp_mcq option1=”rarer to denser medium and it occurs with no loss of intensity” option2=”denser to rarer medium and it occurs with no loss of intensity” option3=”rarer to denser medium and it occurs with loss of intensity” option4=”denser to rarer medium and it occurs with loss of intensity” correct=”option2″]<\/p>\n

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This question was previously asked in<\/div>\n
UPSC CDS-2 – 2016<\/div>\n<\/div>\n
Download PDF<\/a>Attempt Online<\/a><\/div>\n<\/div>\n
\nTotal internal reflection (TIR) is a phenomenon that occurs when light rays travel from a denser medium to a rarer medium and strike the boundary at an angle greater than the critical angle. At this angle, all the light is reflected back into the denser medium. This process is considered lossless because ideally, no light is transmitted or absorbed at the boundary.
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\nFor total internal reflection to occur, two conditions must be met: light must travel from a denser medium to a rarer medium, and the angle of incidence must exceed the critical angle. It is characterized by minimal to no loss of intensity upon reflection.
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\nWhen light travels from a rarer to a denser medium, reflection and refraction occur, but total internal reflection is not possible. Reflection at an interface typically involves some loss of intensity due to absorption or incomplete reflection. Total internal reflection is used in technologies like fiber optics and prisms due to its high efficiency in reflecting light.
\n<\/section>\n","protected":false},"excerpt":{"rendered":"

In total internal reflection, the light travels from [amp_mcq option1=”rarer to denser medium and it occurs with no loss of intensity” option2=”denser to rarer medium and it occurs with no loss of intensity” option3=”rarer to denser medium and it occurs with loss of intensity” option4=”denser to rarer medium and it occurs with loss of intensity” … <\/p>\n

Detailed SolutionIn total internal reflection, the light travels from<\/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":[1088],"tags":[1098,1153,1128],"class_list":["post-85607","post","type-post","status-publish","format-standard","hentry","category-upsc-cds-2","tag-1098","tag-optics","tag-physics","no-featured-image-padding"],"yoast_head":"\nIn total internal reflection, the light travels from<\/title>\n<meta name=\"description\" content=\"Total internal reflection (TIR) is a phenomenon that occurs when light rays travel from a denser medium to a rarer medium and strike the boundary at an angle greater than the critical angle. At this angle, all the light is reflected back into the denser medium. This process is considered lossless because ideally, no light is transmitted or absorbed at the boundary. For total internal reflection to occur, two conditions must be met: light must travel from a denser medium to a rarer medium, and the angle of incidence must exceed the critical angle. It is characterized by minimal to no loss of intensity upon reflection.\" \/>\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\/in-total-internal-reflection-the-light-travels-from\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"In total internal reflection, the light travels from\" \/>\n<meta property=\"og:description\" content=\"Total internal reflection (TIR) is a phenomenon that occurs when light rays travel from a denser medium to a rarer medium and strike the boundary at an angle greater than the critical angle. At this angle, all the light is reflected back into the denser medium. This process is considered lossless because ideally, no light is transmitted or absorbed at the boundary. For total internal reflection to occur, two conditions must be met: light must travel from a denser medium to a rarer medium, and the angle of incidence must exceed the critical angle. 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