Assertion : The pressure of a fixed amount of an ideal gas is proportional to its temperature.
Reason : The frequency of collisions and their impact both increase in proportion to the square root of temperature.

Options

A. If both (A) and (R) are correct and (R) is the correct explanation of (A).
B. If both (A) and (R) are correct, but (R) is not the correct explanation of (A).
C. If (A) is correct, but (R) is incorrect.
D. If both (A) and (R) are incorrect.

Answer

B

Explanation

The pressure of a fixed amount of an ideal gas is proportional to its temperature. `v_(rms) propto sqrt(T)`
Collision frequency is directly proportional to `v_(rms)` On increasing the collision frequency, the pressure increases.