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Two plane mirrors are inclined to each other such that a ray of light incident on the first mirror (M1) and parallel to the second mirror (M2) is finally reflected from the second mirror (M2) parallel to the first mirror (M1). The angle between the two mirrors will be:

a.

90°

b.

45°

c.

75°

d.

60°



Question ID - 50104 | SaraNextGen Top Answer

Two plane mirrors are inclined to each other such that a ray of light incident on the first mirror (M1) and parallel to the second mirror (M2) is finally reflected from the second mirror (M2) parallel to the first mirror (M1). The angle between the two mirrors will be:

a.

90°

b.

45°

c.

75°

d.

60°

1 Answer
127 votes
Answer Key / Explanation : (d) -

Assuming angles between two mirrors be θ  as per geometry,

Sum of angles of

3θ=180°

θ =60°

127 votes


127