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Refraction through a Rectangular Glass Slab

A beam of inc...

Question

A beam of incident light rays falls onto the glass plate. Possible angles for the reflected and refracted rays are shown as E,D,C,B &A in the figure above.
Identify which of the following best represents the refracted ray?

A

A

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B

B

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C

C

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D

D

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E

E

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Solution

The correct option is D A
When a ray travels from rarer medium to denser medium, then it slightly bends towards the normal.
From figure, A is the ray that bends towards the normal after being refracted into a glass (denser) medium.
Hence the possible refracted ray is ray A.

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