# Electromagnetic Theory (CSIR (Council of Scientific & Industrial Research) Physical Sciences): Questions 62 - 64 of 68

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## Question number: 62

» Electromagnetic Theory » Electromagnetic Waves in Free Space

Appeared in Year: 2016

MCQ▾

### Question

The electric field of an electromagnetic wave is , where and are positive constants. This represents: (December)

### Choices

Choice (4) Response

a.

a linear polarised wave travelling in the positive z – direction

b.

a circularly polarised wave travelling in the negative z – direction

c.

an elliptically polarised wave travelling in the negative z – direction

d.

an unpolarised wave travelling in the positive z – direction

## Question number: 63

» Electromagnetic Theory » Interference

Appeared in Year: 2016

MCQ▾

### Question

A screen has two slits, each of width , with their centers at a distance apart. It is illuminated by a monochromatic plane wave travelling along the axis.

The intensity of the interference pattern, measured on a distance screen, at an angle to the axis is: (December)

### Choices

Choice (4) Response

a.

maximum for

b.

maximum for

c.

zero for

d.

zero for only

## Question number: 64

» Electromagnetic Theory » Dynamics of Charged Particles in Static Electromagnetic Field

Appeared in Year: 2016

MCQ▾

### Question

A parallel plate capacitor is formed by two circular conducting plates of radius separated by a distance , where . It is being slowly charged a current that is nearly constant. At an instant when the current is , the magnetic induction between the plates at a distance from the centre of the plate, is: (December)

### Choices

Choice (4) Response

a.

b.

c.

d.