CSIR (Council of Scientific & Industrial Research) Physical Sciences: Questions 130 - 132 of 463

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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 isEquation ; where Equation is a constant and Equation and Equation are the position and momentum respectively. The corresponding Hamiltonian in quantum mechanics, in the coordinate representation, is – (December)

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 131

» Electronics and Experimental Methods » Semiconductor Devices » Junctions

Appeared in Year: 2014

MCQ▾

Question

A junction is made between a metal of work function Equation and a doped semiconductor of work function Equation withEquation . If the electric field at the interface has to be increased by a factor of 3, then the dopant concentration in the semiconductor would have to be – (December)

Choices

Choice (4) Response

a.

Decreased by a factor of Equation

b.

Decreased by a factor of 3

c.

Increased by a factor of 3

d.

Increased by a factor of 9

Question number: 132

» 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 Equation where Equation is a constant and Equation denotes the Boltzmann constant. The internal energy of the gas is – (June)

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

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