Answer to Question #81937 in Optics for Ken Thomas

Question

what is a normal ?
what is an incident ray ?
what is a reflected angle?
what is a laterally inverted ?
what is a virtual image ?
state law of reflection

Answer 1

What is a normal ?

a surface normal, or simply normal, to a surface at a point P is a vector that is perpendicular to the tangent plane to that surface at P.

What is an incident ray ?

An incident ray is a ray of light that strikes a surface.

What is a reflected angle?

The angle between reflected ray and the perpendicular or normal to the surface is the reflected angle.

What is a laterally inverted ?

Lateral inversion means the apparent reversal of the mirror image's left and right when compared with the object.

What is a virtual image ?

optical image formed from the apparent divergence of light rays from a point, as opposed to an image formed from their actual divergence.