# Electromagnetic Theory-Diffraction and Polarization [GATE (Graduate Aptitude Test in Engineering) Physics]: Questions 1 - 5 of 10

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## Question 1

Diffraction and Polarization

Appeared in Year: 2015

### Write in Short

A beam of X – ray of intensity is incident normally on a metal sheet of thickness 2 mm. The intensity of the transmitted beam is . The linear absorption coefficient of the metal sheet (in per m) is ________ (up to one decimal place) .

## Question 2

Diffraction and Polarization

Appeared in Year: 2015

### Write in Short

A point charge is placed between two semi – infinite conducting plates which are inclined at an angle of with respect to each other. The number of image charge is ________.

## Question 3

Diffraction and Polarization

Appeared in Year: 2014

### Question

MCQ▾

An unpolarized light wave is incident from air on a glass surface at the Brewster angle. The angle between the reflected and the refracted wave is –

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question 4

Diffraction and Polarization

Appeared in Year: 2012

### Question

MCQ▾

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### Choices

Choice (4)Response

a.

b.

c.

d.

## Question 5

Diffraction and Polarization

Appeared in Year: 2012

### Question

MCQ▾

Two infinitely extended homogeneous isotropic dielectric media (medium – 1 and medium – 2 with dielectric constant and , respectively) meet at the plane as shown in the figure. A uniform electric field exists everywhere. For , the electric field is given by . The interface separating the two media is charge free. The electric displacement vector in the medium – 2 is given by,

### Choices

Choice (4)Response

a.

b.

c.

d.

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