GATE (Graduate Aptitude Test in Engineering) Physics: Questions 581 - 585 of 659

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Question 581

Appeared in Year: 2006

Question

MCQ▾

In an electromagnetic field, which one of the following remains invariant under Lorentz transformation?

Choices

Choice (4)Response

a.

b.

c.

d.

Question 582

Appeared in Year: 2006

Question

MCQ▾

The target of an tube is subjected to an excitation voltage . The wavelength of the emitted is proportional to –

Choices

Choice (4)Response

a.

b.

c.

d.

Question 583

Appeared in Year: 2006

Question

MCQ▾

A system of four particles is in plane. Of these, two particles each of mass are located at and . The remaining two particles each of mass are located at . The component of the moment of inertial tensor of this system of particle is –

Choices

Choice (4)Response

a.

b.

c.

d.

Question 584

Appeared in Year: 2006

Question

MCQ▾

Which one of the following electronic transitions in Neon is not responsible for LASER action in a Helium – Neon laser?

Choices

Choice (4)Response

a.

b.

c.

d.

Question 585

Appeared in Year: 2006

Question

MCQ▾

A system of localized, non – interacting spin ions of magnetic moment each is kept in an external magnetic field . If the system is in equilibrium at temperature , then Helmholtz free energy of the system is –

Choices

Choice (4)Response

a.

b.

c.

d.

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