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  • Two plane mirrors are arranged at right angles to each other as shown in figure.  ray of light is

Two plane mirrors are arranged at right angles to each other as shown in figure. \mathrm{A} ray of light is incident on the horizontal mirror at an angle \mathrm{\theta } . For what value of \mathrm{\theta } the ray emerges parallel to the incoming ray after reflection from the vertical mirror?

Option: 1

\mathrm{60^{\circ}}


Option: 2

\mathrm{30^{\circ}}


Option: 3

\mathrm{45^{\circ}}


Option: 4

All of these


Answers (1)

best_answer


The incident and the second reflected ray make the same angle \theta with vertical. Therefore, they are parallel for any value of \theta.

Posted by

Rishi

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