Q84 / 90 · JEE Main 2022 (29 Jul Shift 1) · Physics
One mole of a monoatomic gas is mixed with three moles of a diatomic gas. The molecular specific heat of mixture at constant volume is ; then the value of will be _____ . (Assume that the given diatomic gas has no vibrational mode.)
Correct answer: 3
Solution
Molecular specific heat at constant volume in terms of degrees of freedom is given by
Molecular specific heat of mixture at constant volume is
Hence, the correct answer is 3.