JEE Main · ChemistryHard
For a reversible adiabatic expansion of an ideal gas with heat capacity ratio , the relationship between temperature and volume is given by . If the gas is expanded from to , the change in entropy of the system is:
- A.
- B.
- C.
- D.
Show correct answer & step-by-step solution
Correct answer: B —
Solution
- The definition of entropy change for a reversible process is .
- For an adiabatic process, the heat exchange .
- Therefore, and the total change in entropy .
- Hence the answer is (B).
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