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Assertion (A) : The temperature in the t...

Assertion (A) : The temperature in the thermosphere increases with altitude.
Reason (R) : Ozone present in stratosphere absorbs ultraviolet radiation

A

Both (A) and (R) are true and (R) is the correct explanation of (A)

B

Both (A) and (R) are true and (R) is not the correct explanation of (A)

C

(A) is true but (R) is false

D

(A) is false but (R) is true

Text Solution

Verified by Experts

The correct Answer is:
B
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Ozone layer absorbs these radiations of sun

How many are the correct satements among the following? Troposphere is the majar portion of atmosphere. .Stratosphere the region in which mainly ozone laye is present .Sound waves cannot propagate in mesosphere. .In mesosphere temperature falls with an increase in the altitude. . Thermosphere is the region where the temperature increases with increase in altitude. In thermosphere gases ionises by absorbing solar radiations.

Knowledge Check

  • Assertion (A) : The temperature in the thermo sphere increses with altitude. Reason (R): Ozone present in stratosphere absorbs ultraviolet radiation

    A
    Both (A) and (R) are true and (R) is the correct explanation of (A)
    B
    Both (A) and (R) are true and (R) is not the correct explanation of (A)
    C
    (A) is true but (R) is false
    D
    Both (A) and (R) are false
  • (A): The temperature in the thermo sphere increses with altitude. (R) : Ozone present in stratosphere absorbs ultraviolet radiation

    A
    Both (A) and (R) are true and (R) is the correct explanation of (A)
    B
    Both (A) and (R) are true and (R) is not the correct explanation of (A)
    C
    (A) is true but (R) is false
    D
    (A) is false but (R) is true
  • The temperature falls with an increase in altitude at

    A
    stratosphere
    B
    Atmosphere
    C
    mesosphere
    D
    thermosphere
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