The correct ascending order of the wavelengths of the following electromagnetic waves is Ultraviolet, X-rays, infrared, gamma rays and visible light.

• A

  $X$-ray, gamma ray, ultraviolet, infrared, visible light.
• Correct answer
  B

  Gamma ray, X-ray, ultraviolet, visible light, infrared.
• C

  Gamma ray, $X$-ray, infrared, visible light, ultraviolet:
• D

  Gamma ray, $X$-ray, ultraviolet, infrared, visible light.

Solution

EM spectrum is as shown
So, correct order of ascending wavelength is Gamma rays $\rightarrow \mathrm{X}$-rays $\rightarrow$ UV Infrared $\rightarrow$ Visible light $\rightarrow$ Infrared

Hence, the correct answer is option: 'B'.