A plane wavefront is incident on a prism. What will be the nature of emergent wavefront ?

A wavefront is

Wavefronts

A plane wavefront is incident on a prism.Draw the shjape of the refracted wavefront.

Sketch the emergent wavefront.

The refractive index of a medium changes as mu=mu_(0)[1-(x^(2)+y^(2))/(d_(2))]^(1//2) where mu_(0) is the refractive index on the z axis. A plane wavefront (AB) is incident along z axis as shown in the figure. Draw the wavefront at a later time Deltat . Is the wavefront getting focused?

A plane wavefront is incident normally on a convex lens. Sketch the reflected wavefront emerging from the lens.

When a plane wavefront is incident on a double convex lens, the refracted wavefront is

When a plane wavefront is incident on a double convex lens, the refracted wavefront is