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Q. |
Radio waves, microwaves, infra-red spectrum, ultraviolet rays, X-rays and gamma rays are classified as ______. |
A. | light waves |
B. | electromagnetic waves |
C. | electric waves |
D. | magnetic waves |
Answer» B. electromagnetic waves | |
Explanation: Electromagnetic radiation is the radiant energy released by certain electromagnetic processes. It consists of electromagnetic waves which are synchronized oscillations of electric and magnetic fields that propagate at the speed of light through a vacuum. |
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