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Physics Thermodynamics Mix MCQ (Single Correct)

Two cylinders A and B fitted with pistons contain equal amounts of an ideal diatomic gas at 300 K. The piston of A is free to move while that of B is held fixed. The same amount of heat is given to the gas in each cylinder. If the rise in temperature of the gas in A is 30 K, then the rise in temperature of the gas in B is

A
30 K
B
18 K
C
50 K
D
42 K

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Text Solution

Verified by Experts
The correct answer is:
D

In both cylinders A and B the gases are diatomic ( γ γ = 1.4). Piston A is free to move i.e. it is

isobaric process. Piston B is fixed i.e. it is isochoric process. If same amount of heat Δ Δ Q is given to both then

⇒ ⇒

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