{"id":85231,"date":"2025-06-01T03:08:31","date_gmt":"2025-06-01T03:08:31","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=85231"},"modified":"2025-06-01T03:08:31","modified_gmt":"2025-06-01T03:08:31","slug":"which-one-of-the-following-statements-is-true-with-regard-to-a-greenho","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/which-one-of-the-following-statements-is-true-with-regard-to-a-greenho\/","title":{"rendered":"Which one of the following statements is true with regard to a greenho"},"content":{"rendered":"

Which one of the following statements is true with regard to a greenhouse ?<\/p>\n

[amp_mcq option1=”The shorter wavelength infrared radiations from the Sun can enter into the greenhouse while longer wavelength infrared radiations from the ground and the plants inside the greenhouse cannot pass back out through the glass.” option2=”The shorter wavelength infrared radiations from the Sun can enter into the greenhouse and the longer wavelength infrared radiations from the ground and the plants inside the greenhouse can also pass through the glass.” option3=”The shorter wavelength infrared radiations from the Sun cannot enter into the greenhouse while longer wavelength infrared radiations from the ground and the plants inside the greenhouse can pass back out through the glass.” option4=”No infrared radiation can pass through the glass of the greenhouse.” correct=”option1″]<\/p>\n

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This question was previously asked in<\/div>\n
UPSC CDS-1 – 2022<\/div>\n<\/div>\n
Download PDF<\/a>Attempt Online<\/a><\/div>\n<\/div>\n
\nStatement A correctly describes the principle behind a greenhouse effect.
\n<\/section>\n
\nGlass is largely transparent to incoming short-wavelength radiation from the sun (including visible light and some short-wavelength infrared). This radiation warms the interior of the greenhouse (ground, plants, air). The warmed objects then re-emit energy as longer-wavelength infrared radiation (heat). Glass is relatively opaque to this longer-wavelength infrared radiation, trapping the heat inside and causing the temperature to rise. Option A describes this process where shorter wavelengths enter and longer wavelengths cannot easily exit.
\n<\/section>\n
\nWhile sunlight is primarily visible light, it also contains some IR. The initial warming is due to absorption of various wavelengths. The key is the differential transmission of short-wavelength incoming radiation vs. long-wavelength outgoing radiation through the glass. Options B, C, and D describe scenarios that would not result in the typical warming effect observed in a greenhouse.
\n<\/section>\n","protected":false},"excerpt":{"rendered":"

Which one of the following statements is true with regard to a greenhouse ? [amp_mcq option1=”The shorter wavelength infrared radiations from the Sun can enter into the greenhouse while longer wavelength infrared radiations from the ground and the plants inside the greenhouse cannot pass back out through the glass.” option2=”The shorter wavelength infrared radiations from … <\/p>\n

Detailed SolutionWhich one of the following statements is true with regard to a greenho<\/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":[1108,1136,1259],"class_list":["post-85231","post","type-post","status-publish","format-standard","hentry","category-upsc-cds-1","tag-1108","tag-environment-and-ecology","tag-greenhouse-effect-and-climate-change","no-featured-image-padding"],"yoast_head":"\nWhich one of the following statements is true with regard to a greenho<\/title>\n<meta name=\"description\" content=\"Statement A correctly describes the principle behind a greenhouse effect. Glass is largely transparent to incoming short-wavelength radiation from the sun (including visible light and some short-wavelength infrared). This radiation warms the interior of the greenhouse (ground, plants, air). The warmed objects then re-emit energy as longer-wavelength infrared radiation (heat). Glass is relatively opaque to this longer-wavelength infrared radiation, trapping the heat inside and causing the temperature to rise. Option A describes this process where shorter wavelengths enter and longer wavelengths cannot easily exit.\" \/>\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\/which-one-of-the-following-statements-is-true-with-regard-to-a-greenho\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Which one of the following statements is true with regard to a greenho\" \/>\n<meta property=\"og:description\" content=\"Statement A correctly describes the principle behind a greenhouse effect. Glass is largely transparent to incoming short-wavelength radiation from the sun (including visible light and some short-wavelength infrared). This radiation warms the interior of the greenhouse (ground, plants, air). The warmed objects then re-emit energy as longer-wavelength infrared radiation (heat). Glass is relatively opaque to this longer-wavelength infrared radiation, trapping the heat inside and causing the temperature to rise. 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