Electromagnetic Theory-Electromagnetic Waves and Their Reflection (GATE Physics): Questions 1 - 4 of 5

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Question number: 1

» Electromagnetic Theory » Electromagnetic Waves and Their Reflection

Appeared in Year: 2015

MCQ▾

Question

A plane wave (x^+iy^)E0exp[i(kzωt)] after passing through an optical element emerges as (x^iy^)E0exp[i(kzωt)] , where k and ω are the wavevector and the angular frequency, respectively. The optical element is a –

Choices

Choice (4) Response
a.

Faraday rotator

b.

Polarizer

c.

Quarter wave plate

d.

Half wave plate

Question number: 2

» Electromagnetic Theory » Electromagnetic Waves and Their Reflection

Appeared in Year: 2014

MCQ▾

Question

A particle of mass m is in a potential given by, V(r)=a4+ar023r3

Where a and r0 are positive constants. When disturbed slightly from its stable equilibrium position, it undergoes a simple harmonic oscillation. The time period of oscillation is –

Choices

Choice (4) Response
a.

2π2mr03a

b.

2πmr03a

c.

2πmr032a

d.

4πmr03a

Question number: 3

» Electromagnetic Theory » Electromagnetic Waves and Their Reflection

Appeared in Year: 2014

Short Answer Question▾

Write in Short

The electric field of a uniform plane wave propagating in a dielectric, non – conducting medium is given by,

E=x^10cos(6π×107t0.4πz)Vm

The phase velocity of the wave is ________ ×108ms

Question number: 4

» Electromagnetic Theory » Electromagnetic Waves and Their Reflection

Appeared in Year: 2012

MCQ▾

Question

A plane electromagnetic wave traveling in free space is incident normally on a glass plate of refractive index 32 . If there is no absorption by the glass, its reflectivity is –

Choices

Choice (4) Response
a.

16%

b.

20%

c.

50%

d.

4%

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