Thermodynamics Question 7

Question: An ideal gas at 27oC is compressed adiabatically to 827 of its original volume. If γ=53 , then the rise in temperature is

[CPMT 1984; CBSE PMT 1999; DPMT 2000; BHU 2001; Pb. PET 2001; UPSEAT 2002, 03; KCET 2003;]

Options:

A) 1/128

B) 32

C) 128

D) None of the above

Show Answer

Answer:

Correct Answer: C

Solution:

Volume of the gas V=md

and using PVγ = constant .

We get PP=(VV)γ=(dd)γ=(32)7/5=128



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