Assertion : Air quickly leaking out of a balloon becomes cooler. Reason : leaking air undergoes adia

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11.Thermodynamics

easy

$Assertion :$ Air quickly leaking out of a balloon becomes cooler.
$Reason :$ The leaking air undergoes adiabatic expansion.

A

If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.

B

If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.

C

If the Assertion is correct but Reason is incorrect.

D

If both the Assertion and Reason are incorrect.

(AIIMS-2005)

Solution

Air cools down due to adiabatic expansion as air has to do work against external pressure at the cost of its internal energy.

Standard 11

Physics

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