Thermodynamic and Statistical Physics (CSIR (Council of Scientific & Industrial Research) Physical Sciences): Questions 18 - 20 of 64

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Question number: 18

» Thermodynamic and Statistical Physics » Planck's Distribution Law

MCQ▾

Question

In low density oxygen gas at low temperature, only the translational and rotational modes of the molecules are excited. The specific heat per molecule of the gas is – (December)

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 19

» Thermodynamic and Statistical Physics » Blackbody Radiation

Appeared in Year: 2014

MCQ▾

Question

Which of the graphs below gives the correct qualitative behavior of the energy density of black body radiation of wavelength at two temperature and? (June)

Choices

Choice (4) Response

a.

Energy density as a function of wavelength: Choice A

Energy Density as a Function of Wavelength: Choice A

In figure, the graph shows the qualitative behavior of the energy density of black body radiation of wavelength at two temperatures.

b.

Energy density as a function of wavelength: Choice B

Energy Density as a Function of Wavelength: Choice B

In figure, the graph shows the qualitative behavior of the energy density of black body radiation of wavelength at two temperatures.

c.

Energy density as a function of wavelength: Choice C

Energy Density as a Function of Wavelength: Choice C

In figure, the graph shows the qualitative behavior of the energy density of black body radiation of wavelength at two temperatures.

d.

Energy density as a function of wavelength: Choice D

Energy Density as a Function of Wavelength: Choice D

In figure, the graph shows the qualitative behavior of the energy density of black body radiation of wavelength at two temperatures.

Question number: 20

» Thermodynamic and Statistical Physics » Free Energy

Appeared in Year: 2012

MCQ▾

Question

The free energy of gas of N particles in a volume V and at a temperature T is where is a constant and denotes the Boltzmann constant. The internal energy of the gas is – (June)

Choices

Choice (4) Response

a.

b.

c.

d.

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