First slide

Introduction-Electromagnetic waves

Question

The amplitude of an electromagnetic wave in vacuum is quadrupled with no other changes made to the wave. As a result of this quadrupled of the amplitude, which of the following statement is correct?

Easy

A

The speed of wave propagation changes only
B

The frequency of the wave changes only
C

The wavelength of the wave changes only
D

Speed, frequency & wavelength of the wave remains constant

Solution

$S p e e d (C = \frac{1}{\sqrt{μ_{0} \in_{0}}}), F r e q u e n c y & w a v e l e n g t h o f e m w a v e i s i n d e p e n d e n t o f a m p l i t u d e o f e m w a v e .$

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