Which electromagnetic radiation has the shortest wavelength?

Answer and explanation

Correct answer: D. Gamma rays

In the electromagnetic spectrum wavelength decreases from radio waves to gamma rays.
Answer: Gamma rays.
Why not the others: Radio waves: they have the longest wavelength. Infra-red: its wavelength is longer than visible light. Ultraviolet: its wavelength is longer than X-rays.

Practise more Wave Motion.

Free questions with an explanation for every one, and full timed HKDSE (Hong Kong) mock tests.