Ask Questions, Get Answers

Want to ask us a question? Click here
Browse Questions
0 votes

A ray of light is incident at an angle of $20^{\circ}$ to the normal. What is the deviation caused due to reflection?

$(a)\;20^{\circ} \\ (b)\;80^{\circ} \\ (c)\;120^{\circ} \\ (d)\;140^{\circ} $

Can you answer this question?

1 Answer

0 votes
The original path of light is AC.
The reflected ray deviates from its original path by $\delta =180 -(20+20)$
$\qquad=140 ^{\circ}$
Hence d is the correct answer.
answered Jan 15, 2014 by meena.p
edited Jul 28, 2014 by meena.p

Related questions

Ask Question
student study plans
JEE MAIN, CBSE, AIPMT Mobile and Tablet App
The ultimate mobile app to help you crack your examinations
Get the Android App