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When a system in taken from state \( \mathrm{i} \) to state \( \mathrm{f} \) along the path iaf, it is found that \( \mathrm{Q}=50 \mathrm{cal} \) and \( \mathrm{W}=20 \) cal. Along the path ibf \( Q=36 \mathrm{cal} \). W along the path ibf is :-
\( \mathrm{P} \)
(A) \( 6 \mathrm{cal} \)
(B) \( 16 \mathrm{cal} \)
(C) \( 66 \mathrm{cal} \)
(D) \( 14 \mathrm{cal} \)
W
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