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Two cylinders A and B fitted with pistons contain equal amounts of an ideal diatomic gas at 300K. The piston 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

Options

  1. A30 K
  2. B18 K
  3. C50K
  4. D42 K

Correct answer

D. 42 K

Step-by-step solution

array ll for A & for B d Q =n c_p d T & d Q =n c_v d T^ n c_p d T =n c d T^ d T = c_p c_v 30 = 42K array

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