Of the following which is different from the others? A. x-rays B. gamma-rays C. cathode rays D. ultra violet rays E. infrared rays
ANSWER: Option C
The Electromagnetic spectrum EM spectrum is generally divided into seven regions, in order of decreasing wavelength and increasing energy and frequency. They are: radio waves, microwaves, infrared (IR), visible light, ultraviolet (UV), X-rays and gamma rays.
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