Description : Which one among the following is not an electromagnetic wave? (1) X-Ray (2) R-Ray (3) Cathode Ray (4) Infrared Ray
Last Answer : (3) 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 ... includes radio waves, microwaves, infrared, (visible) light, ultraviolet, X-, and gamma radiation.