Wavefronts Patterns for Mirrors , Lens and Prism - Param Himalaya

Wavefronts Patterns for Mirrors , Lens and Prism - Param Himalaya

(a) Wavefronts Patterns for Concave mirror : 

A plane wavefront is reflected as a converging wavefront from a concave mirror.

When a point source of light is at the focus of the concave mirror, then diverging spherical wavefronts fall on the concave mirror.

(b) Wavefronts Patterns for Prism :

A plane wavefront incident on a prism emerges out as a plane wavefront from the prism.

(c) Wavefronts Patterns for Convex lens :

A plane wavefront emerges out of a convex lens as a converging wavefront.

Let a point source of light be at the focus of a convex lens such that diverging spherical wavefronts fall on the convex lens. The refracted wavefront will be a plane wavefront.

(d) Wavefronts Patterns for Concave lens :

a concave lens takes a plane wavefront and transforms it into a diverging spherical wavefront.

(e) Wavefronts Patterns for Convex mirror :

A convex mirror takes a plane wavefront and reflects it as a diverging spherical wavefront.