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Draw the path of a ray of light when it enters one of the faces of a glass slab at an angle of nearly 45°. Label on it
(i) angle of refraction
(ii) angle of emergence and
(iii) lateral displacement.
Here,
$\angle\ i = angle\ of\ incidence = 45°\ (given)$
(i) $\angle\ r = angle\ of\ refraction$
(ii )$\angle\ e = angle\ of\ emergence$
(iii) $RS = lateral\ displacement$
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