Question

The amplitude of em wave in vacuum is doubled with no other changes made to wave. As a result of this doubling of the amplitude, which of the following statement is correct.
A. The speed of wave propagation changes only
B. The frequency of the wave change only
C. The wavelength of the wave changes only
D. None of these

Answer 1

Correct Answer - D
Velocity of electromagnetic wave
`c=(1)/(sqrt(mu_(0)epsilon_(0)))=3xx10^(8)"m s"^(-1)`
It is independent of amplitude, frequency and wavelength of electromagnetic wave.