A gas (γ=1.3) is enclosed in an insulated vessel fitted with insulating piston at a pressure of 105N/m2. On suddenly pressing the piston the volume is reduced to half the initial volume. Thee final pressure of the gas is
A
20.7×105
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B
21.3×105
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C
21.4×105
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D
None of these
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Solution
The correct option is B21.3×105
Given: γ=1.3,P1=105N/m2,V1=2V2
As it is a adiabatic process, so using the relation