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When a system is taken from state i to s...

When a system is taken from state i to state f along the path iaf, it is found that `Q = 50 cal` and `W = 20 cal`. Along the path ibf `Q = 36 cal. W` along the path ibf is:

A

`6` cal

B

`16` cal

C

`66` cal

D

`14` cal

Text Solution

Verified by Experts

The correct Answer is:
A
As a thermodynamic system is taken from state to state f, then the internal energy of the system remains the same irrespective of the path followed `(Q-W)_(faf) = (Q-W)_(lbf) implies 50 -20 = 36 W implies W = 6` cal
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ALLEN-GEOMETRICAL OPTICS-EXERCISE - 05 (A)
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