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Q. |
Which one among the following is not an electromagnetic wave? |
A. | X-Ray |
B. | R-Ray |
C. | Cathode Ray |
D. | Infrared Ray |
Answer» C. Cathode Ray | |
Explanation: In physics, electromagnetic radiation (EMR) refers to the waves (or their quanta, photons) of the electro-magnetic field, propagating (radiating) through space carrying electromagnetic radiant energy. It includes radio waves, microwaves, infrared, (visible) light, ultraviolet, X-, and gamma radiation. |
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