Assertion (A): Relative humidity decreases with increasing air temperature. Reason (R): Absolute humidity increases with increasing evaporation.
- A(A) is false, but (R) is true
- BBoth (A) and (R) are true and (R) is the correct explanation of (A)
- CBoth (A) and (R) are true, but (R) is not the correct explanation of (A)
- D(A) is true, but (R) is false
Show answer and explanation
Correct answer: (c) Both (A) and (R) are true, but (R) is not the correct explanation of (A)
Explanation
Assertion is true: relative humidity falls as temperature rises, because warmer air can hold more moisture while the actual vapour stays the same.
Reason is true: absolute humidity (mass of vapour per unit volume) rises with increased evaporation.
But R explains absolute humidity, whereas A depends on temperature – so R is not the correct explanation of A.