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Question: Answered & Verified by Expert
An ideal gas is made to undergo a cycle depicted by the PV diagram alongside. The curved line from $\mathrm{A}$ to $\mathrm{B}$ is an adiabat.


Then-
PhysicsThermodynamicsKVPYKVPY 2010 (SB/SX)
Options:
  • 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 $1-\frac{\mathrm{T}_{2}}{\mathrm{~T}_{1}}$
  • D The cycle can only be carried out in the reverse of the direction shown in figure
Solution:
1551 Upvotes Verified Answer
The correct answer is: Heat is absorbed in the upper part of the straight line path and released in the lower part
From the analysis of $\mathrm{P}-\mathrm{V}$ diagram we can easily say that $\mathrm{B}$ is the correct option.

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