If Electric field intensity of a uniform plane electro magnetic wave is given as E = - 301 . 6 sin k z - ω t a ^ x + 452 . 4 sin k z - ω t a ^ y V m - 1 . Then, magnetic intensity H of this wave in A m - 1 will be [Given : Speed of light in vacuum c = 3 × 10 8 m s - 1 , Permeability of vacuum μ 0 = 4 π × 10 - 7 N A - 2 ]

- 0 . 8 sin k z - ω t a ^ y - 1 . 2 sin k z - ω t a ^ x

+ 0 . 8 sin k z - ω t a ^ y + 0 . 8 sin k z - ω t a ^ x

+ 1 . 0 × 10 - 6 sin k z - ω t a ^ y + 1 . 5 × 10 - 6 k z - ω t a ^ x

- 1 . 0 × 10 - 6 sin k z - ω t a ^ y - 1 . 5 × 10 - 6 sin k z - ω t a ^ x

Given below are two statements : Statement I : Electromagnetic waves are not deflected by electric and magnetic field. Statement II : The amplitude of electric field and the magnetic field in electromagnetic waves are related to each other as E 0 = μ 0 ε 0 B 0 . In the light of the above statements, choose the correct answer from the options given below:

Statement I is true but statement II is false

Both Statement I and Statement II are true

Statement I is false but statement II is true

Both Statement I and Statement II are false

EASY

JEE Main

IMPORTANT

Earn 100

Arrange the following electromagnetic radiations per quantum in the order of increasing energy:
$A :$ Blue light
$B :$ Yellow light
$C :$ X-ray
$D :$ Radiowave

50% studentsanswered this correctly

Important Questions on Electromagnetic Waves

EASY

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 17 - Electromagnetic Waves>JEE Main - 19th April 2014>Q 56

If microwaves,

X ‐

rays, infrared, gamma rays, ultraviolet, radio waves and visible parts of the electromagnetic spectrum are denoted respectively by

M

X

I

G

U

R

and

V

the following is the arrangement in ascending order of the wavelength

EASY

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 17 - Electromagnetic Waves>JEE Main - 6th April 2014>Q 57

Match List - I (Electromagnetic wave type) with List - II (Its association/application) and select the correct option from the choices given below the lists :

	List - I		List - II
(a)	Infrared waves	(i)	To treat muscular strain
(b)	Radio waves	(ii)	For broadcasting
(c)	X - rays	(iii)	To detect fracture of bones
(d)	Ultraviolet rays	(iv)	Absorbed by the ozone layer of the atmosphere

HARD

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 17 - Electromagnetic Waves>JEE Main - 24 June 2022 Shift 1>Q 58

A plane electromagnetic wave travels in a medium of relative permeability $1.61$ and relative permittivity $6.44$ . If magnitude of magnetic intensity is $4.5 \times 10^{- 2} A m^{- 1}$ at a point, what will be the approximate magnitude of electric field intensity at that point ?

(Given : Permeability of free space $μ_{0} = 4 π \times 10^{- 7} N A^{- 2}$ , speed of light in vacuum $c = 3 \times 10^{8} {m s}^{- 1}$ )

MEDIUM

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 17 - Electromagnetic Waves>JEE Main - 24 June 2022 Shift 2>Q 59

An electric bulb is rated as

200 W

. What will be the peak magnetic field at

4 m

distance produced by the radiations coming from this bulb? Consider this bulb as a point source with

3.5 %

efficiency.

MEDIUM

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 17 - Electromagnetic Waves>JEE Main - 25 June 2022 Shift 1>Q 60

The electric field in an electromagnetic wave is given by

E = 56.5 \sin ω (\frac{t - x}{c}) {NC}^{- 1}

. Find the intensity of the wave if it is propagating along

x

-axis in the free space. (Given

ϵ_{0} = 8.85 \times 10^{- 12} C^{2} N^{- 1} m^{- 2}

)

MEDIUM

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 17 - Electromagnetic Waves>JEE Main - 25 June 2022 Shift 2>Q 61

The electromagnetic waves travel in a medium at a speed of

2.0 \times 10^{8} m s^{- 1}

. The relative permeability of the medium is

1.0

. The relative permittivity of the medium will be

EASY

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 17 - Electromagnetic Waves>JEE Main - 26 June 2022 Shift 2>Q 62

Which is the correct ascending order of wavelengths?

HARD

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 17 - Electromagnetic Waves>JEE Main - 26 June 2022 Shift 1>Q 63

If Electric field intensity of a uniform plane electro magnetic wave is given as

E = - 301.6 \sin (k z - ω t) {\hat{a}}_{x} + 452.4 \sin (k z - ω t) {\hat{a}}_{y} V m^{- 1} .

Then, magnetic intensity

H

of this wave in

A m^{- 1}

will be [Given : Speed of light in vacuum

c = 3 \times 10^{8} {m s}^{- 1}

, Permeability of vacuum

μ_{0} = 4 π \times 10^{- 7} N A^{- 2}

]

Arrange the following electromagnetic radiations per quantum in the order of increasing energy: A: Blue light B: Yellow light C: X-ray D: Radiowave

Important Questions on Electromagnetic Waves

Learn and Prepare for any exam you want !

Arrange the following electromagnetic radiations per quantum in the order of increasing energy:
$A :$ Blue light
$B :$ Yellow light
$C :$ X-ray
$D :$ Radiowave