Question

The angle of incidence on a plane mirror is ${45}^{\circ }$, then the angle of reflection will be

• A. ${35}^{\circ }$
• B. ${45}^{\circ }$
• C. ${135}^{\circ }$
• D. ${145}^{\circ }$

Answer 1

The correct option is B ${45}^{\circ }$

We know, from the laws of reflection, that

$\angle i=\angle r$

Given,

$\angle i={45}^{\circ }$

$\Rightarrow \angle r={45}^{\circ }$
$\therefore$ The angle of reflection is ${45}^{\circ }$

Hence, the correct answer is OPTION B.