Questions
The average thermal energy of a molecule of a diatomic gas is (temperature of gas is T and Boltzmann's constant is K).
a
5KT2
b
3KT2
c
7KT2
d
9KT2
detailed solution
Correct option is A
By law of equipartition of energy, average energy possessed by an ideal gas molecule for each degree of freedom is KT/2. Number of degrees of freedom of a diatomic gas molecule is 5. Hence average energy of a molecule is 5KT/2.Talk to our academic expert!
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The average kinetic energy of a gas molecule at absolute temperature T is
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