What is the geometrical shape of the wavefront when a plane passes through a convex lens?

What is the shape of the wavefront on earth for sunlight?

Draw the diagrams to show the behaviour of plane wavefronts as they pass through a thin convex lens.

What is the shape of wavefront orginating fron a line source?

What is the shape of the wavefront in each of the following cases: Light emerging out of a convex lens when a point source is placed at its focus.

What is the shape of the wavefront in each of the following cases: The portion of the wavefront of light from a distant star intercepted by the Earth.

What happens when: SO_3 is passed through water?

What is meant by a wavefront?What is the shape of the wavefront of a beam of parallel rays?