Thermodynamics - Result Question 18

19. During an adiabatic process, the pressure of a gas is found to be proportional to the cube of its temperature. The ratio of CpCv for the gas is

[2013]

(a) 2

(b) 53

(c) 32

(d) 43

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Answer:

Correct Answer: 19. (c)

Solution:

  1. (c) According to question PT3

But as we know for an adiabatic process the

pressure PTγγ1.

So, γγ1=3γ=32 or, CpCv=32



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