a ray incident on a plane mirror is reflected in a direction such that the angle between the incident and - Science - Light

Question

a ray incident on a plane mirror is reflected in a direction
such that the angle between the incident and the reflected ray is
90 degree what are the angles of incidence and reflection?

Neha Sarin · Accepted Answer

We know that angle of incidence is equal to angle of reflection

Angle form between the incident and reflected ray= 90 degree
{Given}

Let the angle of incidence be y and angle of reflection be also y
{as angle of incidence = angle of reflection}

y+y=
90

or, 2y =
90

or, y =
90/2

or y = 45
degree

So angle of incidence
and angle of reflection are both 45 degrees
each

a ray incident on a plane mirror is reflected in a direction such that the angle between the incident and the reflected ray is 90 degree.what are the angles of incidence and reflection?