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AP EAMCET2003PhysicsKinetic Theory of Gases

The temperature of 5 moles of a gas at constant volume is changed from 100^ C to 120^ C . The change in internal energy is 80 ~J . The total heat capacity of the gas at constant volume will be in J / K is :

Options

  1. A8
  2. B4
  3. C0.8
  4. D0.4

Correct answer

B. 4

Step-by-step solution

n=5 moles, T₁=100^ C T₂=120^ C , U=80 ~J Rise in temperature t=120-100=20^ C U=m s t 80 5 =1 s 20s=0.8 ~J For 5 moles, s=0.8 5 ~J / K =4 ~J / K

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