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AP EAMCET · PHYSICS · Kinetic Theory of Gases

The ratio of kinetic energy of a diatomic gas molecule at a high temperature to that of NTP is

  1. A \(\frac{3}{2}\)
  2. B \(\frac{5}{3}\)
  3. C \(\frac{5}{7}\)
  4. D \(\frac{7}{5}\)
Verified Solution

Answer & Solution

Correct Answer

(D) \(\frac{7}{5}\)

Step-by-step Solution

Detailed explanation

The kinetic energy of a gas molecule is \(\mathrm{K}=\mathrm{K} \cdot \mathrm{E} / \text { molecule }=\frac{\mathrm{f}}{2} \mathrm{k}_{\mathrm{B}} \mathrm{~T}\) For diatomic gas, \(f_1=7\) (At high temperature) \(\mathrm{f}_2=5\) (At low temperature)…