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Question - Refraction of Light - Refraction Through a Rectangular Glass Slab

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ConceptRefraction of Light - Refraction Through a Rectangular Glass Slab  

Question

In your laboratory you trace the path of light rays through a glass slab for different values of angle of incidence (∠i) and in each case measure the values of the corresponding angle of refraction (∠r) and angle of emergence (∠e). On the basis of your observations your correct conclusion is:

(a) ∠i is more than ∠r, but nearly equal to ∠e

(b) ∠i is less then ∠r, but nearly equal to ∠e

(c) ∠i is more than ∠e, but nearly equal to ∠r

(d) ∠i is less than ∠e, but nearly equal to ∠r

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