Question

What is the angle of incidence if the reflected ray is at an angle of 90° to the (1)
incident ray?

Answer 1

$\small{\orange{hii!!..} }$

$\bf{ \widetilde \pink{Correct Answer:}}$

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

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