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NEST2020PhysicsKinetic Theory of Gases

Thermal de Broglie wavelength is the de Broglie wavelength of the gas particles in an ideal gas at temperature T with average kinetic energy given by the equipartition theorem and usual relation between kinetic energy and momentum. Consider an ideal monoatomic gas A of N_a atoms, each of mass m_a and another ideal monoatomic gas B of N_b atoms, each of mass m_b=4 m_a . Both gases are uniformly distributed in boxes of

Options

  1. AIf a photon has wavelength equal to thermal de Broglie wavelength of atoms of gas A then the ratio of photon m
  2. BIf total mass of gas A is same as total mass of gas B then their pressures are related as P_B=4 P_A .
  3. CThermal de Broglie wavelengths of gases A and B are in ratio _A / _B=2 .
  4. DIf volume and temperature are such that, for both gases A and B , the average inter-particle spacing in each d

Correct answer

D. If volume and temperature are such that, for both gases A and B , the average inter-particle spacing in each d

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