Question

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

(A) v₃ < v₆ and U₃ > U₆

(B) v₅ > v₃ and U₃ > U₅

(C) v₅ > v₇ and U₅ < U₇

(D) v₆ < v₇ and U₆ < U₇

Answer 1

Correct option is (C) v₅ > v₇ and U₅ < U₇