Question bank/JEE Main/Physics

JEE MainPhysicsModerateThermodynamics

An ideal gas whose internal energy U is at absolute zero
temperature is equal to zero undergoes areversible adiabatic
compression. If U, P, V, T represents the internal energy, pressure,
volume and absolute temperature respectively for ideal gas
then (γ=CPCv)\left( \gamma = \frac{C_{P}}{C_{v}} \right).

Show answer and solution
U α TU\ \alpha\ T
For adiabatic process TVγ−1={TV}^{\gamma - 1} = constant
∴UVγ−1=\therefore{UV}^{\gamma - 1} =constant
⇒VU1γ−1=\Rightarrow {VU}^{\frac{1}{\gamma - 1}} =constant

Source: Grass-G / P-08 Physics paper 23 October.docx

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