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