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प्रश्न
A light ray does not bend at the boundary in passing from one medium to the other medium if the angle of incident is ______.
पर्याय
0°
45°
60°
90°
उत्तर
A light ray does not bend at the boundary in passing from one medium to the other medium if the angle of incident is 0°.
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संबंधित प्रश्न
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[tan 45° = 1]
