define a normal at the point of incidence
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Answer:
a perpendicular drawn at the point of incidence is called a normal
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Answer:
Normal can be the mirror when the light gets reflected.
Explanation:
You must have read in Light chapter that angle of incidence = angle of reflection. These angles are equally divided by normal when you draw diagram. Normal can be defined as your mirror and incidence and reflection rays are the light ray and reflected ray respectively
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