MEDIUM
JEE Main
IMPORTANT
Earn 100

For plane electromagnetic waves propagating in the -direction, which one of the following combinations gives the correct possible direction for and field respectively?
(a) and
(b) and
(c) and
(d) and

33.33% studentsanswered this correctly

Important Questions on Electromagnetic Waves
HARD
JEE Main
IMPORTANT
Match List I (Wavelength range of electromagnetic spectrum) with List II (Method of production of these waves) and select the correct option from the options given below the lists.
List I | List II | ||
---|---|---|---|
(a) | to | (i) | Vibration of atoms and molecules. |
(b) | to | (ii) | Inner shell electrons in atoms moving from one energy level to a lower level. |
(c) | (iii) | Radioactive decay of the nucleus. | |
(d) | to | (iv) | Magnetron valve. |

EASY
JEE Main
IMPORTANT
During the propagation of electromagnetic wave in a particular medium :-

EASY
JEE Main
IMPORTANT
The magnetic field in a travelling electromagnetic wave has a peak value of . The peak value of electric field strength is :

MEDIUM
JEE Main
IMPORTANT
A plane electromagnetic wave of frequency travels in free space along the positive - direction. At a particular point in space and time, The corresponding magnetic field , at that point will be:

EASY
JEE Main
IMPORTANT
Arrange the following electromagnetic radiations per quantum in the order of increasing energy:
Blue light
Yellow light
X-ray
Radiowave

EASY
JEE Main
IMPORTANT
If microwaves, rays, infrared, gamma rays, ultraviolet, radio waves and visible parts of the electromagnetic spectrum are denoted respectively by , , , , , and the following is the arrangement in ascending order of the wavelength

EASY
JEE Main
IMPORTANT
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
A plane electromagnetic wave travels in a medium of relative permeability and relative permittivity . If magnitude of magnetic intensity is at a point, what will be the approximate magnitude of electric field intensity at that point ?
(Given : Permeability of free space , speed of light in vacuum )
