An ideal gas at pressure P and temperature T is expanding such that PT³ = constant. The coefficient of volume expansion of the gas is ______. (a) 2/T (b) 1/T (c) 4/T (d) 3/T

Answer: (c). PT³ = const ⇒ P ∝ T⁻³. Ideal gas: V ∝ T/P ∝ T⁴. γ = 1/VdV/dT = 4/T, answer (c).

An ideal gas at pressure P and temperature T is expanding such that… | JEE Main 2026 (5 Apr, Shift 2)

Q11JEE Main 2026 · 5 APR · SHIFT 2Medium

Thermometry & Thermal Expansion

An ideal gas at pressure $P$ and temperature $T$ is expanding such that $PT^3 =$ constant. The coefficient of volume expansion of the gas is ______.

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Answer: (c)

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