Question

hi

what is incident ray?

and what is pinhole​

Answer 1

Answer:

REFLECTION  A ray of light heading towards an object is called an incident ray. ...  when light ray reflects off the object, it is called a reflected ray.  A perpendicular line drawn at any point on a surface is called a normal (just like with normal force).

Answer 2

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Incident ray - A ray of light falling on the surface separating two mediums is the incident ray. Refracted ray - A ray of light traveling in another medium, with change in direction is the refracted ray. Angle of incidence - The angle which the incident ray makes with the normal is called angle of incidence.

Thanks !!