Question

As the angle of incidence is increased for a ray incident on a reflecting surface, the angle between the incident and reflected rays ultimately approaches:

• A. zero
• B. ${45}^o$
• C. ${90}^o$
• D. ${180}^o$

Answer 1

The correct option is D ${180}^o$

The angle of incidence is the angle between the incident ray and the normal. As this angle increases, it ultimately approaches ${90}^0$, the reflected ray also approaches a ${90}^0$ angle with the normal. Thus, the angle between the incident and reflected ray ultimately approaches ${180}^0$