Thermodynamics Question 6

Question: The pressure and density of a diatomic gas (γ=7/5) change adiabatically from (P, d) to (P’, d’). If dd=32 , then PP should be

[CPMT 1982; EAMCET 2001]

Options:

A) 245

B) 8

C) 403

D) 32 times its initial pressure

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Answer:

Correct Answer: D

Solution:

PVγ =constant

Therefore P2P1=(V1V2)γP2=(8)5/3P1=32 P1



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