Thermodynamics Question 49

Question: One mole of an ideal gas with γ=1.4 , is adiabatically compressed so that its temperature rises from 27°C to 35°C. The change in the internal energy of the gas is (R=8.3J/mol.K)

[EAMCET 2001]

Options:

A) 1 : 16

B) 1 : 8

C) 1 : 4

D) 8 : 1

Show Answer

Answer:

Correct Answer: D

Solution:

P1V1γ=P2V2γ

Therefore P2P1=[V1V2]γ=[41]3/2=81



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