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During the adiabatic expansion of 2 mole...

During the adiabatic expansion of 2 moles of a gas, the internal energy of the gas is found to decrease by 2 joules , the work done during the process on the gas will be equal to

A

1J

B

`-1j`

C

`2j`

D

`-2j`

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The correct Answer is:
D
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