Question

Q3. If a light ray incident on an interface of two media with incident angle i) zero degree and ii) ninety degree , what would be the angles of refraction in each case ? please help​

Answer 1

Answer:

Ray will suffer refraction. if μ1&μ2 both are doubled critical angle will remain same, so the direction of refracted ray will remain same.

" Hope it helps :)."

Answer 2

Answer:

According to the law of reflection, the angle of incidence is equal to the angle of refraction.

That is, ∠i=∠r. Let it be x.

In this case, the difference between the angle of incidence and angle of refraction is 90 degrees.

Given, ∠i+∠r = 90 degrees

or, x+x=90

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or, x=45

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Hence, the angle of incidence is 45

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