Electromagnetic Waves Ques 1
The ratio of contributions made by the electric field and magnetic field components to the intensity of an electromagnetic wave is 1:1: ( $c=$ speed of electromagnetic waves)
[2020]
(a) $1: 1$
(b) $1: c$
(c) $1: c^{2}$
(d) $c: 1$
Show Answer
Answer:
Correct Answer: 1.(a)
Solution:
The energy in an electromagnetic wave is divided equally between the electric and magnetic fields.
So, in an electromagnetic wave, the intensity is equally contributed by the electric field and the magnetic field.
Hence, required ratio should be $1: 1$.
BETA
