JEE Main 2025 Physics question

PhysicsKinetic Theory of GasesJEE Main 2025

For a diatomic gas, if for rigid molecules and for another diatomic molecules, but also having vibrational modes. Then, which one of the following options is correct ? ( and are specific heats of the gas at constant pressure and volume)

Answer: (4)

Solution

. Without vibration f=5, ; with vibration f=7, . So .

Question ID VK-001775