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Which of the following is correct for the beam which enters the medium?

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in Physics by (63.8k points)

Which of the following is correct for the beam which enters the medium? 

(a) Travel as a cylindrical beam 

(b) Diverge 

(c) Converge 

(d) Diverge near the axis and converge near the periphery

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1 Answer

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Best answer

The correct option is (c).

Explanation:

Since the refractive index is less at beam boundary, the ray at the edges of the beam move faster compared to the axis of beam. Hence the beam converges.

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