A gas is suddenly expanded such that its final volume becomes 3 times its intial volume. If the specific heat at constant volume of the gas (Cv)=2R. Then the ratio of initial to final pressure is nearly equal to
Options
(a) 5
(b) 6
(c) 7
(d) 8
Correct Answer:
5
Explanation:
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P1V1^gamma = P2V2^gamma
P2=P1* (V1/V2)^gamma [gamma = 3/2]
=1* (1/3)^3/2
P1/P2= 3 root3= 5.1