MHT CET · Physics · Thermodynamics
A sample of a gas expends from volume \(V_1{ }^{\prime}\) to \(V_2\) The amount of work done by the gas is maximum when the expansion is
- A Adiabatic
- B Equal in isothermal and isobaric
- C Isothermal
- D Isobaric
Answer & Solution
Correct Answer
(C) Isothermal
Step-by-step Solution
Detailed explanation
We know that
\(\Delta \mathrm{Q}=\Delta \mathrm{E}+\Delta \mathrm{W}\)
Work done by gas is maximum when \(\Delta \mathrm{E}\) is minimum
For Isothermal Change, \(\Delta \mathrm{E}=0\)
So, for isothermal expansion work done is maximum
\(\Delta \mathrm{Q}=\Delta \mathrm{E}+\Delta \mathrm{W}\)
Work done by gas is maximum when \(\Delta \mathrm{E}\) is minimum
For Isothermal Change, \(\Delta \mathrm{E}=0\)
So, for isothermal expansion work done is maximum
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