# Electromagnetic Waves-Electromagnetic Waves & Characteristics (NEET Physics): Questions 5 - 10 of 15

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## Question number: 5

» Electromagnetic Waves » Electromagnetic Waves & Characteristics

MCQ▾

### Question

Which of the following waves have minimum frequency?

### Choices

Choice (4) Response

a.

Audible waves

b.

c.

Microwaves

d.

Ultrasonic waves

## Question number: 6

» Electromagnetic Waves » Electromagnetic Waves & Characteristics

MCQ▾

### Question

The intensity of light from a source is . Find the amplitude of electric field in this-wave-

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 7

» Electromagnetic Waves » Electromagnetic Waves & Characteristics

MCQ▾

### Question

Electromagnetic waves travel in a medium with a speed of 2 x 10 8 m/s. The relative permeability of the medium is 1. What is the relative permittivity of the medium?

### Choices

Choice (4) Response

a.

-0.25

b.

2.25

c.

3.25

d.

1.25

## Question number: 8

» Electromagnetic Waves » Electromagnetic Waves & Characteristics

Assertion-Reason▾

### Assertion (Ꭺ)

The electromagnetic waves of shorter wavelength can travel longer distances on earth’s surface than those of longer wavelengths.

### Reason (Ꭱ)

Shorter the wavelength, the larger is the velocity of wave propagation.

### Choices

Choice (4) Response

a.

Ꭺ is true but Ꭱ is false

b.

Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ

c.

Both Ꭺ and Ꭱ are false

d.

Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ

## Question number: 9

» Electromagnetic Waves » Electromagnetic Waves & Characteristics

MCQ▾

### Question

Unit of expression µ 0ϵ 0 is,

### Choices

Choice (4) Response

a.

m/s

b.

s/m

c.

s 2 /m 2

d.

m 2 /s 2

## Question number: 10

» Electromagnetic Waves » Electromagnetic Waves & Characteristics

MCQ▾

### Question

Which of the following are electromagnetic waves?

(1) Cosmic rays (2) Gamma rays

(3) X-rays (4) β-rays

Select the correct answers and mark it according to the following codes:

Codes:

### Choices

Choice (4) Response

a.

1 and 2 are correct

b.

1 and 3 are correct

c.

1, 2 and 3 are correct

d.

2 and 4 are correct

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