Question

If the angle of incidence is ${50}^o$, then calculate the angle between the incidence ray and the reflected ray.

• A. ${50}^o$
• B. ${100}^o$
• C. ${130}^o$
• D. ${80}^o$

Answer 1

The correct option is B ${100}^o$

We know, from the laws of reflection, that

$\angle i=\angle r$

Given,

$\angle i={50}^{\circ }$

$\Rightarrow \angle r={50}^{\circ }$

Angle between the incident ray and the reflected ray is given as

$\angle i+\angle r={50}^{\circ }+{50}^{\circ }={100}^{\circ }$

Hence, the correct answer is OPTION B.