Engineering
Physics
Thermodynamics
Degree of Freedom Internal Energy of Gas and Specific Heat Capacity of Gases
Heat engine Refrigerator Entropy
Question
The number of degrees of freedom for a rigid diatomic molecule is ____________.
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Solution
Number of degree of freedom d = 3 N − 1
where N is the number of atoms in a molecules In diatomic molecules, N = 2
⇒ d = 3(2) − 1 = 5
Hence diatomic molecule has 5 degrees of freedom (3 translational and 2 rotational).