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Question: Answered & Verified by Expert
A diatomic gas (γ=1.4) does 200 J of work when it is expanded isobarically. The heat given to the gas in the process is :
PhysicsThermodynamicsJEE MainJEE Main 2024 (01 Feb Shift 2)
Options:
  • A 850 J
  • B 800 J
  • C 600 J
  • D 700 J
Solution:
1095 Upvotes Verified Answer
The correct answer is: 700 J

For degree of freedom, we can write

γ=1+2f=1.42f=0.4

f=5

For isobaric process, W=nRΔT=200 J.

Now, we can write

Q=f+22nRΔT

=72×200=700 J

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