Which of the following is true about EM waves? 1 Exposure to radio waves, microwaves, infrared rays and visible light are not as dangerous compared to the exposure to UV rays, X-rays and gamma rays. Gamma radiations are very strong and considered to be the most dangerous because they can penetrate even thick concrete and lead U. UV rays are used to check the signature on pass book. iv. Visible light rays can be used in optical fibers in medical uses, screen of electronic devices. artificial lighting and in photosynthesis

a. i only

b. i, ii, only

c. i, iii, iv only

d. iii, iv only

Electromagnetism is a part of physical science including the investigation of the electromagnetic power, a kind of actual collaboration that happens between electrically charged particles. At high energy, the powerless power and electromagnetic power are bound together as a solitary electroweak power. Electromagnetic is utilized to depict the electrical and magnetic powers or impacts created by an electric flow electromagnetic fields.

The electromagnetic range incorporates, from longest frequency to most brief: radio waves, microwaves, infrared, optical, bright, X-beams, and gamma-beams. Instances of electromagnetic waves going through space autonomous of issue are radio and TV waves, microwaves, infrared beams, noticeable light, bright light, X-beams, and gamma beams. All of the light from the Sun and different sources comprises of photons which are the electromagnetic power transporters. Magnets and the World's magnetic field, which shields us from unsafe radiation, are parts of the electromagnetic power.

what are electromagnetic:

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