Question

Angle of incidence and angle of refraction of a medium of 30° and 45° respectively find the angle of refraction for the same medium if angle of incidence is now 45

Answer 1

sin i / sin r = refractive index

sin 30°/sin 45° = 1/2/1/root2

refractive index =1/root of 2

sin i /sin r = refraxtive index

sin 45°/ sin r = 1/root 2

1/root2 × root 2 = sin r

1 = sin r

sin 90° = sin r

r = 90°

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