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Refraction through a Rectangular Glass Slab

After refract...

Question

After refraction of light through a glass slab, incident ray and emergent ray are:

A

Perpendicular

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B

Parallel

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C

In a straight line

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D

None of these

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Solution

The correct option is B Parallel
In case of a rectangular glass slab, the refraction takes place at both air-glass interface and glass-air interface. The emergent ray is parallel to the direction of incident ray.

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