Question

Which of the following is the correct relation between frequency (f), speed (C) and wavelength $\left(\lambda \right)$ of an electromagnetic radiation?

• A. $f=\frac{\lambda }{C}$
• B. $C=\frac{\lambda }{f}$
• C. $C=f\times \lambda$
• D. $f=C\times \lambda$

Answer 1

The correct option is C

$C=f\times \lambda$

The flow of energy at the universal speed of light through the free space or through a material medium in the form of the electric and magnetic fields that make up the electromagnetic waves.

It includes Gamma rays, X rays, Ultra violet rays, Visible light, IR rays, Microwaves and Radio waves.

An electromagnetic wave is characterized by its intensity and the frequency of the time variation of the electric and magnetic fields.

The relation between frequency (f), speed (C) and wavelength $\left(\lambda \right)$ of an electromagnetic radiation is:-

$f=\frac{C}{\lambda }$