Given below are two statements, an Assertion (A) and a Reason (R). Choose the correct answer.

Assertion (A):Cloudy nights are warmer compared to clear nights (without clouds) during winters.

Reason (R):Clouds permit cold waves from the sky to reach the earth.

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

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

C(A) is true, but (R) is false ✓ Correct

D(A) is false, but (R) is true

Correct answer: (C) (A) is true, but (R) is false

Explanation

The assertion is true but the reason is false, so only the first statement stands.

The assertion is correct, as cloudy winter nights stay warmer than clear ones.

Clouds trap the earth's outgoing long-wave heat and radiate part of it back to the surface.

The reason is wrong, since clouds do not let cold waves reach the earth but instead hold heat in.

On a clear night that heat escapes freely to space, letting temperatures fall further.

This warming return of heat by the atmosphere is the everyday greenhouse effect.

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