SaraNextGen Study App [2022-23]
Last Updated On 23-10-2022 - By Sara

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 :-

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
5876 Votes
3537

Answer Key : (d) -

Assuming angles between two mirrors be θ  as per geometry,

Sum of angles of

3θ=180°

θ =60°



Next Question :

If the area of an equilateral triangle is 24 sq. cm, then its perimeter is  

(a)

2 cm

(b)

4 cm

(c)

12 cm

(d)

96 cm


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