In the order of increasing frequency, the electromagnetic spectrum may be arranged as
A Gamma rays, \mathrm{X}-rays, visible light, radio waves
B \mathrm{X}-rays _{7} gamma rays, visible light, radio waves
C Radio waves, visible light, \mathrm{X}-rays, gamma rays
D Radio waves, visible light, gamma rays, \mathrm{X}-rays
In the order of increasing frequency, the electromagnetic spectrum may be arranged as
A Gamma rays, \mathrm{X}-rays, visible light, radio waves
B \mathrm{X}-rays _{7} gamma rays, visible light, radio waves
C Radio waves, visible light, \mathrm{X}-rays, gamma rays
D Radio waves, visible light, gamma rays, \mathrm{X}-rays

Correct option is C Radio waves, visible light, \mathrm{X}-rays, gamma rays
The electromagnetic spectrum is a continuum of all electromagnetic waves arranged according to frequency and wavelength. As shown in the image the order of increasing frequency is : Radio waves, Visible light, \mathrm{X}-rays and Gamma rays.