JAMB Physics 2011 Objective — Question 27

Question 27 of 49 from the Joint Admissions and Matriculation Board (JAMB) Physics 2011 Objective paper, with the correct answer and a full explanation.

Which of the following electromagnetic waves has the highest frequency?

A. A. Infrared-rays
B. B. X-ray wavesCorrect
C. C. Ultra-violet rays
D. D. Radio waves

Explanation

In order of increasing frequency: radio waves < infra-red rays < visible light < ultraviolet rays < X-rays < gamma rays. Of the options given, X-rays have the highest frequency.

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