CSIR Physical Sciences: Questions 129 - 130 of 389

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Question number: 129

» 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 ET(α) of black body radiation of wavelength λ at two temperature T1 and T2(T1<T2) ? (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: 130

» Quantum Mechanics » Commutators and Heisenberg Uncertainty Principle

Appeared in Year: 2014

MCQ▾

Question

Suppose Hamiltonian of a conservative system in classical mechanics is H=ωxp ; where ω is a constant and x and p are the position and momentum respectively. The corresponding Hamiltonian in quantum mechanics, in the coordinate representation, is – (December)

Choices

Choice (4) Response

a.

iω(xx12)

b.

iωxx

c.

iω(xx+12)

d.

iω2xx

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