GATE (Graduate Aptitude Test in Engineering) Physics: Questions 191 - 196 of 659

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Question 191

Covariant and Contravariant Tensor

Appeared in Year: 2013

Question

MCQ▾

In the most general case, which one of the following quantities is NOT a second order tensor?

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d.

Question 192

Appeared in Year: 2011

Question

MCQ▾

The lifetime of an atomic state is nanosecond. The natural line width of the spectral line in the emission spectrum of this state is of the order of

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Choice (4)Response

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b.

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d.

Question 193

Appeared in Year: 2011

Question

MCQ▾

The normalized eigen states of a particle in a one – dimensional potential well

are given by, , where

The particle is subjected to a perturbation,

The shift in the ground state energy due to the perturbation, in the first order perturbation theory, is –

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Choice (4)Response

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b.

c.

d.

Question 194

Appeared in Year: 2011

Question

MCQ▾

Let and be two pairs of canonical variables. The transformation

is canonical for

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Choice (4)Response

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b.

c.

d.

Question 195

Appeared in Year: 2011

Question

MCQ▾

In the following circuit, the voltage across and the current through the resistance are –

Circuit Diagram of Three Resistance and Two Diodes

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Choice (4)Response

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Question 196

Appeared in Year: 2013

Question

MCQ▾

A uniform circular disk of radius and mass is rotating with angular speed about an axis, passing through its centre and inclined at an angle degree with respect to its symmetry axis. The magnitude of the angular momentum of the disk is –

Choices

Choice (4)Response

a.

b.

c.

d.

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