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Question

Two vessels A and B of equal volume V0 are connected by a narrow tube which can be closed by a valve. The vessels are fitted with pistons which can be moved to change the volumes. Initially, the valve is open and the vessels contain an ideal gas (CP/Cv=γ) at atmospheric pressure P0 and atmospheric temperature T0. The walls of the vessels A are diathermic and those of B are adiabatic. The valve is now closed and the pistons are slowly pulled out to increase the volumes of the vessels to double the original value.
The valve is now opened for sufficient time so that the gases acquire a common temperature and pressure. Find the new values of the temperature and pressure.

A
T0,P0/2.
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B
T0,P0/3.
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C
T0,P0/12.
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D
T0,P0/6.
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Solution

The correct option is A T0,P0/2.
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