What is the cause of refraction of a wave traveling from one medium to another? There...

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What is the cause of refraction of a wave traveling from one medium to another?

There is a change in wave amplitude due to the change in the medium.

There is a speed change due to the change in the medium.

None of the above are associated with refraction.

There is a frequency change due to the change in the medium

Answer 1

Answer #1

Refractive index of a medium is defined as the ratio of velocity of light in a medium to the velocity of light in that medium.

Mu has a value that is always greater than 1 because c<v always.

Hence, we see that when light enters from one medium to another its velocity changes.

Wavelength and frequency for a particular color of light does not change during refraction.

Therefore, change in speed is the cause of refraction.

The 2nd option is correct.

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Answer 2

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