A ray of light travelling in air goes into water. The angle of refraction will be :

(a) $90^{\circ}$ (b) smaller than the angle of incidence (c) it goes along the normal (d) greater than the angle of incidence

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Solution

(b) smaller than angle of incidence as it bends towards the normal thereby decreasing the angle of refraction

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Q. A ray of light travelling in air goes into water. The angle of refraction will be:

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A ray of light travelling in air goes into water. The angle of refraction will be : (a) 90∘ (b) smaller than the angle of incidence (c) it goes along the normal (d) greater than the angle of incidence

(b) smaller than angle of incidence as it bends towards the normal thereby decreasing the angle of refraction

A ray of light travelling in air goes into water. The angle of refraction will be :

(a) $90^{\circ}$ (b) smaller than the angle of incidence (c) it goes along the normal (d) greater than the angle of incidence