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Q .     Two cylinders A and B fitted with pistons, contain equal number of moles of an ideal monatomic gas at 400 K. The piston of A is free to move while that of B is held fixed. Same amount of heat energy is given to the gas in each cylinder. If the rise in temperature of the gas in A is 42K, the rise in temperature of the gas B is (gamma=5/3)

EAMCET 2007
A

25.2K

B

35K

C

42K

D

70K

#### HINT

The process in the piston A is at constant pressure. So, the amount of heat is (dQ)_P=nc_p(dT)_A
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