Two plane mirrors are kept at right angles

PHYSICS · Single correct · CBSE · Physics · Light — Reflection and Refraction · Light — Reflection and Refraction

Problem

Two plane mirrors are kept at right angles. A ray of light is incident on the first mirror making an angle of

25^{\circ}

with the normal. After successive reflections from the two mirrors, what is the angle between the incident and emergent rays? (a)

130^{\circ}

(b)

180^{\circ}

(c)

90^{\circ}

(d)

155^{\circ}