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Q.

In a process on a system, the initial pressure and volume are equal to the final pressure and volume.

    a) The initial temperature must be equal to the final temperature.
    b) The initial internal energy must be equal to the final internal energy.
    c)  The net heat given to the system in the process must be zero.
    d) The net work done by the system in the process must be zero.

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a

only a, b are correct

b

only b, d are correct

c

only c, d are correct

d

only b,c are correct

answer is A.

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Detailed Solution

from PV = nRT

since final pressure and volume is same as initial final temperature is same as initial so final internal energy is same as initial.

Since the process is cyclic work done is represented by area closed in P-V graph.

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