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Define the following terms 

a. Incident ray 

b. Reflected ray 

c. Normal 

d. Angle of incidence

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(a) Incident tavi The ray of light that falls on the surface of the reflection materials. 

(b) Reflected ray: The ray of light that comes from the point when the incident ray falls on the reflection material. 

(c) Normal: The perpendicular line drawn from, the point of incidence to the plane of reflecting surface is called normal. 

(d) Angle of incidence The angle formed between the incident ray PO and the normal ‘ON’ is angle of incidence.

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