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An ideal gas is made to undergo a cycle ...

An ideal gas is made to undergo a cycle depicted by the PV diagram alongside. The curved line from A to B is an adiabat.

Then-

A

The efficiency of this cycle is given by unity as no heat is released during the cycle

B

Heat is absorbed in the upper part of the straight line path and released in the lower part

C

If `T_(1)` and `T_(2)` are the maximum and minimum temperatures reached during the cycle, then the efficiency is given by

D

The cycle can only be carried out in the reverse of the direction shown in figure

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The correct Answer is:
B
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