in the image above, an incident ray XY makes an angle of 15\( ^{\circ} \) with a fixed line AY which is normal to surface of a plane mirror if the mirroe is turned as indicated by the arrow through \( 40^{\circ} \) what angle will the reflected ray make with AY
incident ray = XY
incidence angle i = 15\( ^{\circ} \)
rotation angle θ = 40º
angle that the reflected ray make with AY = i + 2θ
= 15 + [2 * 40] = 15 + 80 = 95º
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