In following figures (a) to (d) , variation of volume by change of pressure is shown in figure. gas

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11.Thermodynamics

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In following figures $(a)$ to $(d)$, variation of volume by change of pressure is shown in figure. The gas is taken along the path $A B C D A$. Change in internal energy of the gas will be .......

A

Positive in all cases from $(a)$ to $(d)$

B

Positive in cases $(a), (b)$ and $(c)$ but zero in case $(d)$

C

Negative in cases $(a), (b)$ and $(c)$ but zero in case $(d)$

D

Zero in all the four cases

Solution

(d)

$\Delta U=0$ in all cases because cyclic process.

Standard 11

Physics

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