KTGHard
Question
A fixed mass of gas undergoes the cycle of changes represented by PQRSP as shown in Figure. In some of the changes, work is done on the gas and in others, work is done by the gas. In which pair of the changes work is done on the gas?
Options
A.PQ and RS
B.PQ and QR
C.OR and RS
D.RS and SP.
Solution
work done on the gas = negative work
W = PdV when V → decreases
then W = − ve
hence option D is correct.
W = PdV when V → decreases
then W = − ve
hence option D is correct.
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