What type of wavefront will emerge from a (i) distant light source and (ii) point source?

(i) Plane; (ii) Spherical

The correct answer is Option (2) → (i) Plane; (ii) Spherical

(i) Distant light source: The wavefronts are approximately plane because the rays arriving at the observer are nearly parallel.

(ii) Point source: The wavefronts are spherical because the light radiates uniformly in all directions from a point.