Question

From the diagram, what is the angle between the incident ray and the reflected ray?

• A. ${40}^o$
• B. ${50}^o$
• C. ${60}^o$
• D. ${70}^o$

Answer 1

The correct option is A ${40}^o$

$i=({90}^o-{70}^o)={20}^o$

$\therefore r={20}^o$

So, angle between incident ray and reflectected ray = $({20}^o+{20}^o)={40}^o$