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Assertion : When a plane wave passes thr...

Assertion : When a plane wave passes through a thin prism, the emerging wavefront gets tilted.
Reason : Speed of light is less is glass than in air.

A

If both assertion and reason are true and reason is the correct explanation of assertion.

B

If both assertion and reason are true but reason is not the correct explanation of assertion.

C

If assertion is true but reason is false.

D

If both assertion and reason are false.

Text Solution

Verified by Experts

The correct Answer is:
A

Since the speed of light is less in glass, the lower portion of the incoming wavefront which travel through the greatest thickness of glass gets delayed. Therefore, the emerging wavefront gets tilted.
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