a multiple choice question

[zapcase1499]

The angle to which an incident ray at an angle 'x' deviates on getting reflected from a surface is:
:arrow: x
:arrow: 2x
:arrow: 180-2x
:arrow: 180-x

please tell the reason also.

[teena chandran]

180-2x we have to find the angle between the incident ray & refected ray i.e,180 - incident ray + reflected ray.it is given incident ray = x therefore reflected ray too is x.so the angle = 180 - (x+x)
= 180 -2x

[Binsi]

great Teena!! u r superb

[teena chandran]

:wink: Thank you Binsi. :D