PHYSICS · Single correct · CBSE · Physics · Kinetic Theory · Kinetic Theory
Problem
The specific heats, Cp and Cv of a gas of diatomic molecules, A, are given (in units of J mol−1 K−1 ) by 29 and 22, respectively. Another gas of diatomic molecules, B, has the corresponding values 30 and 21. If they are treated as ideal gases, then:
(1) A is rigid but B has a vibrational mode.
(2) A has a vibrational mode but B has none.
(3) A has one vibrational mode and B has two.
(4) Both A and B have a vibrational mode each.