CSIR (Council of Scientific & Industrial Research) Physical Sciences: Questions 108 - 111 of 463

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Question number: 108

» Quantum Mechanics » Commutators and Heisenberg Uncertainty Principle

Appeared in Year: 2012

MCQ▾

Question

The commutator is – (June)

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 109

» Classical Mechanics » Dynamical System

Appeared in Year: 2014

MCQ▾

Question

The radius of Earth is approximately 6400 km. The height h at which the acceleration due to Earth’s gravity differs from at the Earth’s surface by approximately 1 % is – (December)

Choices

Choice (4) Response

a.

48 km

b.

16 km

c.

32 km

d.

64 km

Question number: 110

» Quantum Mechanics » Timeindependent Perturbation Theory and Applications

Appeared in Year: 2013

MCQ▾

Question

The motion of a particle of mass m in one dimension is described by the Hamiltonian. What is the difference between the (quantized) energy of the first two levels? (In the following, is the expectation value of in the ground state. )

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 111

» Electromagnetic Theory » Electrostatics: Gauss's Law and Its Applications

Appeared in Year: 2012

MCQ▾

Question

Four charges (two + q and two –q) are kept fixed at the four vertices of a square of side a as shown

Four charges kept at vertices of a square

Four Charges Kept at Vertices of a Square

In figure four charges (two + q and two –q) are kept fixed at the four vertices of a square of side a.

At the point P which is at a distance R from the centre, the potential is proportional to – (December)

Choices

Choice (4) Response

a.

b.

c.

d.

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