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Question

Explain the following terms:
Incident ray, Reflected ray, Angle of incidence, Angle of reflection, Normal. 


Solution

Incident ray - The ray of light falling on the surface AB is called the incident ray. In figure, PN Is the Incident ray. 

Reflected ray - The Incident ray bouncing back In the same medium after striking the reflecting surface is called reflected ray. In figure, NQ Is the reflected ray. 

Angle of Incidence - The angle formed between the incident ray and the normal Is the Angle of Incidence. (PNM is the Angle of Incidence.) 

Angle of reflection - The angle formed between the normal and the reflected ray Is called angle of reflection (MNQ is the angle of reflection) 

Normal - It is the line drawn perpendicular to the reflecting surface at the point of incidence. MN is normal. 

1680664_1799947_ans_790ed236879c47a6b64335ed1f08a125.png

Physics
NCERT
Standard XII

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