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+1 vote
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in Physics by (50.1k points)

A point source of light is placed at focus of convex lens, then what is the shape of wavefront after passing through the lens?

(1) Planar

(2) Cylindrical

(3) Spherical

(4) Elliptical

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1 Answer

+1 vote
by (50.3k points)

Correct option is (1) Planar

Planar wavefront

As the source is at focus, rays get parallel after passing through the lens, hence planar wavefront.

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