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Questions  

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: Some 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
18 K
b
42 K
c
30 K
d
50 K

detailed solution

Correct option is B

∆QA=nCP(∆T)A and ∆QB=nCV(∆T)B According to question ∆QA=∆QB ⇒                               CV  (∆T)B=CP∆TA                                               ∆TB=42 K

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Similar Questions

Consider the following statements.
(A) When a hot liquid is mixed with a cold liquid, the temperature of the mixer is undefined for some time and then becomes nearly constant.
(B) If two bodies at different temperature are mixed in a calorimeter, the total energy of the two bodies remains conserved.
Select the correct option.
(a) (A) is false but (B) is true.
(b) Both (A) and (B) are true.
(c) (A) is true but (B) is false.
(d) Both (A) and (B) are false.
 


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