Thermodynamics - Result Question 19

20. Which of the following relations does not give the equation of an adiabatic process, where terms have their usual meaning?

(a) PγT1γ= constant

[NEET Kar. 2013]

(b) P1γTγ= constant

(c) PVγ= constant

(d) TVγ1= constant

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Answer:

Correct Answer: 20. (a)

Solution:

  1. (a) Adiabatic equations of state are PVγ= constant TV1= constant

P1γTγ= constant.

When a thermodynamic system undergoes a change in such a way that to exchange of heat takes place between system and surroundings, then the process is adiabatic process. In this process P,V and T change but ΔQ=0.



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