ICSE Class 7 Answered

Define: Incident ray Point of incidence Reflected ray Normal at point of incidence Angle of incidence

Asked by Topperlearning User | 15 May, 2015, 07:02: AM

Expert Answer

Incident ray: A ray of light from a source that falls on the surface is called an incident ray of light.
Point of incidence: The point on the surface where the incident ray strikes the surface is called the point of incidence.
Reflected ray: The ray of light that bounces back from the surface of an object is called a reflected ray of light.
Normal at point of incidence: A line drawn perpendicular on the surface (i.e. making 90° angle with the surface) of an object at the point of incidence is called a normal point of incidence.
Angle of incidence: The angle formed between the incident ray and the normal is called the angle of incidence.

Answered by | 15 May, 2015, 09:02: AM