A wavefront and a ray of light are

What do you mean by a ray ? What is the relation between a wavefront and a ray of light ?

A : The direction of a light is always perpendicular to wavefront R : A ray of light is a line perpendicular to a wavefront in the direction of propagation.

Define wavefront, wavenormal and a ray of light. What are the different types of wavefronts? How are they produced ?

At what angle does a ray of light remain incilned to the wavefront ?

Define wavefront and a ray.

Can two wavefronts of light form a source intersect.