Assertion : When a gas at high pressure expands against vacuum, the work done is maximum.
Reason : Work done in expansion depends upon the pressure inside the gas and increase in volume.

Options

A. A and (R) are correct and (R) is the correct explanation of(A).
B. 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

D

Explanation

`w =- P _(ext) Delta V`