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During an adi...

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During an adiabatic expansion of $2 m o l e s$ of a gas, the change in internal energy was found to be equal to $- 200 J$ . The work done during the process will be equal to

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 C $200 J$
Using first law, we have $d Q - d W = d U$ .

For adiabatic process we have $d Q = 0$ , thus $d U = - d W = 200 J$

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