what is the angle of deviation for a ray which isincident with an angle 45 degree on the plane mirror
Answers
Answered by
7
90
Explanation:
A ray of light that is incident on to the surface of a plane-mirror is reflected with the angle of incidence equal to the angle of reflection. Suppose that the ray had continued, through the mirror, in a straight line it would make an angle θ with the surface of the mirror. The total angle between the straight-line path and the reflected ray is twice the angle of incidence. This is called the deviation of the light and measures the angle at which the light has strayed from its initial straight-line path.
Since angle of incident =angle of reflection
Hence r=45
0
And here angle of deviation,
=180 −(i+r)
=90
Similar questions