Thermodynamics Question 250

Question: In the P-V diagram, I is the initial state and F is the final state. The gas goes from I to F by (i) IAF, (ii) IBF, (iii) ICE The heat absorbed by the gas is

Options:

A) the same in all three processes

B) the same in (i) and (ii)

C) greater in (i) than in (ii)

D) the-same in (i) and (iii)

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Answer:

Correct Answer: C

Solution:

[c] Heat absorbed in a thermodynamic process is given by ΔQ=ΔU+ΔW.

Here ΔU is same for all the three processes as it depends only on initial and final states.

But ΔWI=+ve,ΔWII=0,ΔWIII=ve

ΔQI>ΔQII



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