Question

For light diverging from a point source,

• A. The wavefront is cylindrical
• B. The wavefront is parabolic
• C. Intensity does not depend upon distance
• D. The wavefront is spherical

Answer 1

The correct option is D The wavefront is spherical

For point source, as the light travels radially outwards, the wavefronts are spherical as shown. And intensity decreases as the surface area of the wavefront increases and power transmitted remains constant with distance.