Answer:[tex]67^{\circ}[/tex]
Explanation:
Given
Ray of light incident on plane making an angle of [tex]23^{\circ}[/tex] with normal
Thus incident angle [tex]i=23^{\circ}[/tex]
So according to the law of incidence is equal to angle of reflection
[tex]\angle i=\angle r[/tex]
thus [tex]\angle r=23^{\circ}[/tex]
and angle between mirror and reflected ray [tex]=90^{\circ}-23^{\circ}[/tex]
[tex]=67^{\circ}[/tex]