# Electromagnetic Theory (GATE (Graduate Aptitude Test in Engineering) Physics): Questions 12 - 17 of 88

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## Question number: 12

» Electromagnetic Theory » Energy and Momentum of Electromagnetic Waves

Appeared in Year: 2014

### Write in Short

The intensity of a laser in free space is . The corresponding amplitude of the electric field of the laser is .

## Question number: 13

» Electromagnetic Theory » Interference

Appeared in Year: 2014

MCQ▾

### Question

In an interference pattern formed by two coherent sources, the maximum and the minimum of the intensities are and , respectively. The intensities of the individual waves are –

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 14

» Electromagnetic Theory » 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 number: 15

» Electromagnetic Theory » Diffraction and Polarization

Appeared in Year: 2014

MCQ▾

### Question

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 number: 16

» Electromagnetic Theory » Scalar and Vector Potentials

Appeared in Year: 2016

MCQ▾

### Question

The direction of for a scalar field at the point is –

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 17

» Electromagnetic Theory » Poynting Vector

Appeared in Year: 2016

MCQ▾

### Question

The electric field component of a plane electromagnetic wave travelling in vacuum is given by . The Poynting vector for the wave is –

### Choices

Choice (4) Response

a.

b.

c.

d.

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