
Identify the correct statements from the following descriptions of various properties of electromagnetic waves.
A. In a plane electromagnetic wave electric field and magnetic field must be perpendicular to each other and direction of propagation of wave should be along electric field or magnetic field.
B. The energy in electromagnetic wave is divided equally between electric and magnetic fields.
C. Both electric field and magnetic field are parallel to each other and perpendicular to the direction of propagation of wave.
D. The electric field, magnetic field and direction of propagation of wave must be perpendicular to each other.
E. The ratio of amplitude of magnetic field to the amplitude of electric field is equal to speed of light.
Choose the most appropriate answer from the options given below:


Important Questions on Electromagnetic Waves

Match List - I with List - II
List-I | List-II | ||
(a) | UV rays | (i) | Diagnostic tool in medicine |
(b) | -rays | (ii) | Water purification |
(c) | Microwave | (iii) | Communication, Radar |
(d) | Infrared wave | (iv) | Improving visibility in foggy days |
Choose the correct answer from the options given below :


If and represent electric field and propagation vectors of the EM waves in vacuum, then magnetic field vector is given by:
( angular frequency)

The electric field and magnetic field components of an electromagnetic wave going through vacuum is described by
Then the correct relation between and is given by


Match List I and List II
A | Gauss’s Law in Electrostatics | I | |
B | Faraday's Law | II | |
C | Gauss’s Law in Magnetism | III | |
D | Ampere-Maxwell Law | IV |
Choose the correct answer from the options given below :

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 .
In the light of the above statements, choose the correct answer from the options given below:
