Question

The angle, between the incident ray and the emergent ray, for a rectangular glass slab is-
(a) 90°
(b) 0
(c) a non-zero acute angle
(d) an obtuse angle
please give correct answer
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Answer 1

Answer:

b. 0

When a ray of light passes through a rectangular glass slab, the emergent ray is parallel to the incident ray produced.

Now, angle of deviation is the angle between the emergent ray and the incident ray produced.

So, these two rays being parallel, the angle of deviation is 0.

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Answer 2

Answer:

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