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The change in...

Question

The change in internal energy of two moles of a gas during adiabatic expansion is found to be $- 100 J$ . The work done during the process is

A

- 100 J

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B

0 J

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C

100 J

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D

200 J

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Solution

The correct option is D $100 J$
The process is adiabatic which implies that $d Q = 0$ .
Thus using first law $- d W = d U ⟹ W = 100 J$

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