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Question

If the change in internal energy of an ideal gas is equal to negative of the work done by the system, then

A
the process may be adiabatic
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B
the process may be isothermal
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C
the process must be isobaric
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D
the temperature must decrease
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Solution

The correct option is A the process may be adiabatic
If U = -W
Then,
Q = 0
i.e. no heat is exchanged.
The process may be adiabatic.
ANSWER : A

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