JEE Main 2022 · 25 Jul · Shift 1 · Physics Q37

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PhysicsSingle correct+4 / -1Question 37 of 90

A certain amount of gas of volume V at 27°C temperature and pressure $2\times10^7$ Nm $^{-2}$ expands isothermally until its volume gets doubled. Later it expands adiabatically until its volume gets redoubled. The final pressure of the gas will be (Use $\gamma=1.5$ ) :

3.536\times10^5

3.536\times10^6

1.25\times10^6

1.25\times10^5

Answer and worked solution

Official answer: B

Isothermal doubling: $10^7$ Pa. Adiabatic doubling: $10^7\times2^{-1.5}\approx3.536\times10^6$ Pa.

(B)

Topics:Thermodynamic processes

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JEE Main 2022 · 25 Jul · Shift 1, Physics question 37