JEE Advanced 2026 Paper 2 Physics Q9

Physics · Thermodynamics · Kinetic Theory of Gases

Problem

Ten moles of an ideal monoatomic gas, initially in state a at atmospheric pressure and temperature Ta = 27°C, is enclosed in a metal cylinder of volume V₀ fitted with a frictionless piston. The gas is suddenly compressed to state b with volume V₀/3. Now, keeping the piston stationary, the cylinder is submerged in a water bath of temperature 11°C until the gas reaches the temperature of the water bath, which is denoted as state c. Finally, while still in the water bath, the piston is brought slowly to its initial position, which is denoted as state f. If R is universal gas constant, then the correct option(s) is/are: [Given: 9¹ᐟ³ = 2.08]

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