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JAMB Physics 1986 Question 29

Question 29

Electromagnetic Spectrum

In which of the following arrangements is the wavelength in an increasing order?

  1. A.Gamma rays, infra-red rays, x-rays, radiowaves
  2. B.Gamma rays, x-rays, infra-red ray, radiowaves
  3. C.Radiowaves, x-rays gamma rays, infra-red rays
  4. D.Infra-red rays, radiowaves, x-rays, gamma rays.
Show the answer and explanation

Answer: B (Gamma rays, x-rays, infra-red ray, radiowaves)

Explanation

From shortest to longest wavelength: gamma rays, X-rays, (ultraviolet, visible,) infra-red, radio waves.