Question

if the angle between incident ray and reflected ray is 80 degree then calculate the angles between incident ray and plane mirror ​

Answer 1

Answer:

The angle between the incident ray and the normal is known as the angle of incidence. The angle between the reflected ray and the normal is known as the angle of reflection. ... The law of reflection states that when a ray of light reflects off a surface, the angle of incidence is equal to the angle of reflection.

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Answer 2

<i +<r + 80° =180°

<i +<r = 180-80=100°

<i +<r = 100° , also <i = <r ,incident Angle = reflected angle.

Hence,

2<i =100°

<i =50°