Physics
JAMB 2000
An engineer intends to deviate a light ray from its path by 120
o through reflection from a plane mirror. Calculate the angle of incidence
-
A.
60o
-
B.
40o
-
C.
30o
-
D.
20o
Correct Answer: Option C
Explanation
Angle of deviation = 180 - [i + v]
= 180 - 2i [since i = v]
∴ 120 = 180 - 2i
2i = 180 - 120
= 60
∴ i = 30
o
There is an explanation video available below.
Report an Error
Ask A Question
Download App
Explanation Video
Quick Questions
Contributions ({{ comment_count }})
Please wait...
Modal title
Report
Block User
{{ feedback_modal_data.title }}