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Two cylinders A and B fitted with pistons contain equal amounts of an ideal diatomic gas at 300 K. The pistons of A is free to move, while that of B is kept 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
Select one:
  • a)
    42 K
  • b)
    50 K
  • c)
    30 K
  • d)
    18 K
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
Two cylinders A and B fitted with pistons contain equal amounts of an ...
A is free to move, therefore, heat will be supplied at constant pressure
∴  ...(i)
B is held fixed, therefore, heat will be supplied at constant volume.
∴   ...(ii)
But dQA = dQB  (given)
∴ 

 [ = 1.4 (diatomic)]  (dTA = 30 K)
= (1.4) (30 K)
dTB = 42 K
The correct answer is: 42 K
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Most Upvoted Answer
Two cylinders A and B fitted with pistons contain equal amounts of an ...
A is free to move, therefore, heat will be supplied at constant pressure
∴  ...(i)
B is held fixed, therefore, heat will be supplied at constant volume.
∴   ...(ii)
But dQA = dQB  (given)
∴ 

 [ = 1.4 (diatomic)]  (dTA = 30 K)
= (1.4) (30 K)
dTB = 42 K
The correct answer is: 42 K
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Two cylinders A and B fitted with pistons contain equal amounts of an ideal diatomic gas at 300 K. The pistons of A is free to move, while that of B is kept 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 isSelect one:a)42 Kb)50 Kc)30 Kd)18 KCorrect answer is option 'A'. Can you explain this answer?
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