Question

A ray of light is incident on a glass slab of re-
fractive index 1.5, making an angle of 40° with
the surface. The angle of refraction in glass is
a) 40° by 30° 42' c) 50° d) 60°​

Answer 1

Answer:

r = 30.42°

Explanation:

u = sin i/ sin r

1.5 = sin 50/ sin r

r = sin*-1( sin 50/ 1.5)

= 30.42°

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