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प्रश्न
A ray of light is incident as a normal ray on the surface of the separation of two different media. What is the value of the angle of incidence in this case?
पर्याय
90°
45°
60°
0°
MCQ
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उत्तर
0°
Explanation:
A normal ray falls perpendicular to the surface, making its angle with the normal line exactly zero.
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