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Which of the following is not a characteristic of electromagnetic waves?

Athey can travel through a vacuum.
Bthey can travel at various speeds through any one material.
Cthey can be refracted.
Dthey can be reflected.

Verified Answer :

Answer : The incorrect option is, (b) they can travel at various speeds through any one material.

Explanation :

Electromagnetic waves : It is a type of energy which is produced by the oscillating magnetic and electric filed disturbance. Or we can say that it is produced by the movement of electric charged particles through the vacuum or matter.

It is a wave where the two vectors are vibrating mutually perpendicular to each other and in direction of the wave. The two vectors are electric field and magnetic field.

The gamma-rays, x-rays, ultraviolet-rays, infrared-rays, microwaves and radio-waves are the electromagnetic waves.

The characteristic of electromagnetic waves are :

  • They can travel through the vacuum.
  • They can travel through the matter.
  • They can travel at same speeds through any of the material. That means the speed of light is always constant that is, \(3.0\times 10^8m/s\)
  • They can be refracted.
  • They can be reflected.

Hence, the incorrect option is, (b) they can travel at various speeds through any one material.

a. they can travel through a vacuum

c. they can be refracted.

d. they can be reflected.

information regarding speed:

  • In the case of electromagnetic waves, it could be travel at different kind of speeds via the one material.
  • Here the speed of the light should be divided by the refraction index.
  • Also, it could be refracted and reflected.

Find out more information about the  speed here ;brainly.com/question/7359669?referrer=searchResults

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