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Electromagnetic waves are refracted when they
  • a)
    pass into a medium of different dielectric constant
  • b)
    are polarized at right angles to the direction of propagation
  • c)
    encounter a perfectly conducting surface
  • d)
    pass through a small slot in a conducting plane
Correct answer is option 'A'. Can you explain this answer?
Most Upvoted Answer
Electromagnetic waves are refracted when theya)pass into a medium of d...
Explanation:

When electromagnetic waves pass into a medium of different dielectric constant, they experience a change in their velocity, which causes them to be refracted. This phenomenon is known as refraction.

Dielectric constant:
The dielectric constant is a measure of a material's ability to store electrical energy in an electric field. Different materials have different dielectric constants, and when electromagnetic waves pass from one medium to another with a different dielectric constant, the waves are refracted.

Refractive index:
The refractive index of a medium is a measure of how much the velocity of light is reduced when it travels through that medium. It is related to the dielectric constant of the medium.

Snell's law:
Snell's law describes the relationship between the angles of incidence and refraction when waves pass through a boundary between two different media. It can be stated as:

n1 * sin(θ1) = n2 * sin(θ2)

where n1 and n2 are the refractive indices of the two media, and θ1 and θ2 are the angles of incidence and refraction, respectively.

Refraction of electromagnetic waves:
When electromagnetic waves pass from one medium to another with a different dielectric constant, their velocity changes. According to Snell's law, this change in velocity causes the waves to be refracted.

The refractive index of a medium is directly related to its dielectric constant. Therefore, when electromagnetic waves pass into a medium with a different dielectric constant, the refractive index changes, and the waves are refracted.

In summary, electromagnetic waves are refracted when they pass into a medium of different dielectric constant because the change in the dielectric constant causes a change in the refractive index, leading to a change in the velocity of the waves.
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Electromagnetic waves are refracted when theya)pass into a medium of d...
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Electromagnetic waves are refracted when theya)pass into a medium of different dielectric constantb)are polarized at right angles to the direction of propagationc)encounter a perfectly conducting surfaced)pass through a small slot in a conducting planeCorrect answer is option 'A'. Can you explain this answer?
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