MHT CET 2026 Physics question
An ideal gas with pressure P, volume V and temperature T is expanded isothermally to volume 2V and a final pressure P<sub>i</sub>. The same gas is expanded adiabatically to a volume 2V then the final pressure is P<sub>a</sub>. In terms of , the ratio of the two specific heats for the gas, the ratio P<sub>i</sub> /P<sub>a</sub> is
Answer: (C)
Solution
Isothermal expansion obeys Boyle's law: , so . Adiabatic expansion obeys , so . Therefore , option (C).
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