{"id":88602,"date":"2025-06-01T07:15:40","date_gmt":"2025-06-01T07:15:40","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=88602"},"modified":"2025-06-01T07:15:40","modified_gmt":"2025-06-01T07:15:40","slug":"the-normal-lapse-rate-of-temperature-of-earths-atmosphere-drops-to-0","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/the-normal-lapse-rate-of-temperature-of-earths-atmosphere-drops-to-0\/","title":{"rendered":"The normal lapse rate of temperature of Earth’s atmosphere drops to 0\u00b0"},"content":{"rendered":"

The normal lapse rate of temperature of Earth’s atmosphere drops to 0\u00b0C at the<\/p>\n

[amp_mcq option1=”upper part of ionosphere.” option2=”upper boundary of the tropopause.” option3=”lower part of mesosphere.” option4=”upper boundary of stratopause.” correct=”option4″]<\/p>\n

\n
\n
This question was previously asked in<\/div>\n
UPSC NDA-2 – 2019<\/div>\n<\/div>\n
Download PDF<\/a>Attempt Online<\/a><\/div>\n<\/div>\n
\nThe temperature of the Earth’s atmosphere generally decreases with altitude in the troposphere (normal lapse rate), increases in the stratosphere, decreases again in the mesosphere, and increases in the thermosphere. The temperature reaches a relative maximum around 0\u00b0C at the upper boundary of the stratopause.
\n<\/section>\n
\nThe stratopause marks the boundary between the stratosphere and the mesosphere. In the stratosphere, temperature increases due to absorption of UV radiation by ozone. This increase stops at the stratopause, where the temperature is typically around 0\u00b0C before decreasing sharply in the mesosphere. The “normal lapse rate” (temperature decrease with height) applies to the troposphere and mesosphere. The question phrasing is slightly ambiguous (“rate… drops to 0\u00b0C at the”), but in the context of atmospheric layers and boundaries, it most likely refers to the temperature value reaching around 0\u00b0C at a boundary where the lapse rate changes direction.
\n<\/section>\n
\nThe approximate temperatures at key boundaries are: Tropopause (top of troposphere): -50\u00b0C to -60\u00b0C (highly variable). Stratopause (top of stratosphere): around 0\u00b0C. Mesopause (top of mesosphere): -90\u00b0C to -100\u00b0C (coldest point). Temperature increases rapidly in the thermosphere.
\n<\/section>\n","protected":false},"excerpt":{"rendered":"

The normal lapse rate of temperature of Earth’s atmosphere drops to 0\u00b0C at the [amp_mcq option1=”upper part of ionosphere.” option2=”upper boundary of the tropopause.” option3=”lower part of mesosphere.” option4=”upper boundary of stratopause.” correct=”option4″] This question was previously asked in UPSC NDA-2 – 2019 Download PDFAttempt Online The temperature of the Earth’s atmosphere generally decreases with … <\/p>\n

Detailed SolutionThe normal lapse rate of temperature of Earth’s atmosphere drops to 0\u00b0<\/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":[1119,1107,1106],"class_list":["post-88602","post","type-post","status-publish","format-standard","hentry","category-upsc-nda-2","tag-1119","tag-the-atmosphere","tag-world-and-physical-geography","no-featured-image-padding"],"yoast_head":"\nThe normal lapse rate of temperature of Earth's atmosphere drops to 0\u00b0<\/title>\n<meta name=\"description\" content=\"The temperature of the Earth's atmosphere generally decreases with altitude in the troposphere (normal lapse rate), increases in the stratosphere, decreases again in the mesosphere, and increases in the thermosphere. The temperature reaches a relative maximum around 0\u00b0C at the upper boundary of the stratopause. The stratopause marks the boundary between the stratosphere and the mesosphere. In the stratosphere, temperature increases due to absorption of UV radiation by ozone. This increase stops at the stratopause, where the temperature is typically around 0\u00b0C before decreasing sharply in the mesosphere. The "normal lapse rate" (temperature decrease with height) applies to the troposphere and mesosphere. The question phrasing is slightly ambiguous ("rate... drops to 0\u00b0C at the"), but in the context of atmospheric layers and boundaries, it most likely refers to the temperature value reaching around 0\u00b0C at a boundary where the lapse rate changes direction.\" \/>\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-normal-lapse-rate-of-temperature-of-earths-atmosphere-drops-to-0\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"The normal lapse rate of temperature of Earth's atmosphere drops to 0\u00b0\" \/>\n<meta property=\"og:description\" content=\"The temperature of the Earth's atmosphere generally decreases with altitude in the troposphere (normal lapse rate), increases in the stratosphere, decreases again in the mesosphere, and increases in the thermosphere. The temperature reaches a relative maximum around 0\u00b0C at the upper boundary of the stratopause. The stratopause marks the boundary between the stratosphere and the mesosphere. In the stratosphere, temperature increases due to absorption of UV radiation by ozone. This increase stops at the stratopause, where the temperature is typically around 0\u00b0C before decreasing sharply in the mesosphere. The "normal lapse rate" (temperature decrease with height) applies to the troposphere and mesosphere. 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