TS EAMCET · Physics · Thermodynamics
An ideal gas expands isothermally from volume \(V_1\) to volume \(V_2\). It is then compressed to the original volume \(V_1\) adiabatically. If \(p_1, p_2\) and \(W\) represent the initial pressure, final pressure and the net work done by the gas respectively during the entire process, then
- A \(p_1>p_2, W=0\)
- B \(p_1>p_2, W>0\)
- C \(p_2>p_1, W>0\)
- D \(p_2>p_1, W < 0\)
Answer & Solution
Correct Answer
(D) \(p_2>p_1, W < 0\)
Step-by-step Solution
Detailed explanation
Processes \(A\) to \(B\) and \(C\) to \(D\) are parts of straight line graphs of form \(y=m x\). Also, \(p=\frac{\mu R}{V} T(\mu=3)\) \(p \propto T\) So, volume remains constant for the graphs \(A B\) and \(C D\). So, no work is done during processes for \(A\) to \(B\) and \(C\)…
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