Question

The wavefront of waves will be spherical when the rays of light are:
a) parallel
b) perpendicular
c) monochromatic
d) not parallel

Answer 1

Heyaa☺

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The wavefront of waves will be spherical when the rays of light are perpendicular.

Option-(b).

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Hope it helps..✌

Answer 2

The wavefront of waves will be spherical when the rays of light are not parallel and moving radially outwards from a point source and these rays happen to be perpendicular to the wavefronts.

Spherical wavefronts spread out in all directions equally from a single point by extending in a series of spherical arcs.