PHYSICS

medium • PYQ Reworded

Question

Read carefully, then pick the best option.

An ideal gas is in thermodynamic equilibrium. The number of degrees of freedom of a molecule of the gas is

n

. The internal energy of one mole of the gas is

U_{n}

and the speed of sound in the gas is

\mathrm{v}_{n}

. At a fixed temperature and pressure, which of the following is the correct option?

v_{3}<v_{6}

and

U_{3}>U_{6}

v_{5}>v_{3}

and

U_{3}>U_{5}

v_{5}>v_{7}

and

U_{5}<U_{7}

v_{6}<v_{7}

and

U_{6}<U_{7}

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Thermodynamics — Medium JEE physics MCQ