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प्रश्न
A ray of light fall on a plane surface at an angle of incidence of 9° and reflection occurs. Calculate the angle of reflection in degree.
टीपा लिहा
उत्तर
By the first law of reflection, the angle of incidence is always equal to the angle of reflection.
⌊i = ⌊r . Here, the angle of incidence is 9°. So the angle of reflection must be equal to 9°.
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