GATE (Graduate Aptitude Test in Engineering) Physics: Questions 187 - 189 of 659

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Question number: 187

» Thermodynamics and Statistical Physics » First and Second Order Phase Transitions

Appeared in Year: 2011

MCQ▾

Question

In a first order phase transition, at the transition temperature, specific heat of the system,

Choices

Choice (4) Response

a.

Remains unchanged and its entropy has finite discontinuity

b.

Diverges and its entropy remains the same

c.

Diverges and its entropy has finite discontinuity

d.

Has finite discontinuity and its entropy diverges.

Question number: 188

» Classical Mechanics » Collisions and Scattering Problems

Appeared in Year: 2011

MCQ▾

Question

Two particles, each of rest mass collide head – on and stick together. Before collision, the speed of each mass was times the speed of light in free space. The mass of the final entity is

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 189

» Solid State Physics » Dielectric and Magnetic Properties of Solid

Appeared in Year: 2013

MCQ▾

Question

A circular polarized monochromatic plane wave is incident on a dielectric interface at Brewster angle. Which one of the following statement is CORRECT?

Choices

Choice (4) Response

a.

The reflected light is plane polarized perpendicular to the plane of incidence and the transmitted light is plane polarized in the plane of incidence.

b.

The reflected light is plane polarized perpendicular to the plane of incidence and the transmitted light is elliptically polarized.

c.

There will be no reflection light and the transmitted light is circularly polarized.

d.

The reflected light is plane polarized in the plane of incidence and the transmitted light is circularly polarized.

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