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

Option: 1

60^{\circ}


Option: 2

30^{\circ}


Option: 3

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

seema garhwal

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