Question

there must be different ________ for refraction of light.​

Answer 1

Answer:

diff medium

Explanation:

here diff medium means 2 medium with diff refractive index

refractive index=velocity of light in vaccum/ velocity of light in that medium

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Answer 2

Answer:

For refraction to occur substances must be transparent and light ray must pass from region of one index of refraction to another i.e. both substances should have different refractive indices should and the light ray must impinge at an angle other than normal which must not be less than the critical angle.

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