Question

The angle between incident ray and reflected ray is ${60}^{\circ }$. What is the value of angle of incidence?

• A. ${30}^{\circ }$
• B. ${60}^{\circ }$
• C. ${120}^{\circ }$
• D. None of the above

Answer 1

The correct option is A ${30}^{\circ }$

$i+r={60}^0$

From laws of reflection, $i=r$

So, $i+i={60}^0$

or, $2i={60}^0$

or, $i={30}^0$