For isothermal process : PV=Pi2VP=2Pi For adiabatic process PVγ=Pa(2 V)γ (∵ for monatomic gas γ=5/3) [From (i) ] or, 2PiV35=Pa(2 V)35 ⇒PiPa=2352⇒PiPa=23−2
An ideal monatomic gas with pressure P, volume V and temperature T is expanded isothermally to a volume 2V and a final pressure Pi. If the same gas is expanded adiabatically to a volume 2 V, the final pressure is Pa. The ratio PiPa is
Held on 26 May 2012 · Verified 6 Jul 2026.
2−1/3
21/36
22/3
2−2/3
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