In the context of the mesosphere, which of the following statements is NOT correct?

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SSC CHSL Previous Paper 87 (Held On: 12 Oct 2020 Shift 1)
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  1. It is directly above the stratosphere. 
  2. It is the third layer of the atmosphere.
  3. Meteorites burn up in this layer on entering from the space. 
  4. Within the mesosphere, temperature increases with increasing height.

Answer (Detailed Solution Below)

Option 4 : Within the mesosphere, temperature increases with increasing height.
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SSC CHSL Exam 2023 Tier-I Official Paper (Held On: 02 Aug 2023 Shift 1)
100 Qs. 200 Marks 60 Mins

Detailed Solution

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The correct answer is Within the mesosphere, temperature increases with increasing height.

Key Points

 Mesosphere - 

  • It extends above the stratosphere up to a height of about 80 km.
  • It is the coldest layer of the atmosphere.
  • The mesosphere is directly above the stratosphere.
  • The stratosphere and mesosphere are collectively termed as " Middle atmosphere 
  • Within the mesosphere, temperature decreases with increasing height, due to decreasing solar heating and increasing cooling by CO2 radiative emission.

Additional Information

  • There are a total of five atmospheric layers.
  • These are - 
  1. Troposphere
  2. Stratosphere
  3. Mesosphere
  4. Thermosphere
    • Ionosphere: the lowest part of the Thermosphere contains the ionosphere
  5. Exosphere

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