Question

what is the angle of incidence of the ray it if the reflection Ray is at the angle of the 90s into any incident ray​

Answer 1

the angle of incidence is 90 degree because due to LAw second, the angle of incidence is equal to the angle of reflection

Answer 2

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Answer:

If the reflected ray is at the angle of 90o to the incident ray, then the angle of incidence is 45°. According to the law of reflection, the angle of incidence and the angle of reflection are equal. Therefore, the angle of incidence and the angle of reflection both are $\frac{90}{2}$=45°