GATE (Graduate Aptitude Test in Engineering) Physics: Questions 379 - 383 of 659

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Question 379

Two and Three Level Systems

Appeared in Year: 2007

Question

MCQ▾

In a laser, the laser transition takes place in –

Choices

Choice (4)Response

a.

only.

b.

first, then in

c.

only

d.

first, then is

Passage

A particle of mass is constrained to move in a vertical plane along a trajectory given by , where is a constant.

Question 380 (1 of 2 Based on Passage)

Appeared in Year: 2006

Question

MCQ▾

The Lagrangian of the particle is –

Choices

Choice (4)Response

a.

b.

c.

d.

Question 381 (2 of 2 Based on Passage)

Appeared in Year: 2006

Question

MCQ▾

The equation of motion of the particle is –

Choices

Choice (4)Response

a.

b.

c.

d.

Question 382

Appeared in Year: 2008

Question

MCQ▾

An voltage of is applied to the primary of a step – down transformer. The secondary of the transformer is centre tapped and connected to a full wave rectifier with a load resistance. The voltage appearing across the load is –

Choices

Choice (4)Response

a.

b.

c.

d.

Question 383

Appeared in Year: 2008

Question

MCQ▾

A dielectric sphere is placed in a uniform electric field directed along the positive axis. Which one of the following represents the correct equipotential surfaces?

Choices

Choice (4)Response

a.

A Dielectric Sphere in Electric Field: Choice A

b.

A Dielectric Sphere in Electric Field: Choice B

c.

A Dielectric Sphere in Electric Field: Choice C

d.

A Dielectric Sphere in Electric Field: Choice D

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