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Question: Two plane mirrors \(\theta\)as shown in the figure. A ray of light 1,which is parallel to \(\mathrm...

Two plane mirrors θ\thetaas shown in the figure. A ray of light 1,which is parallel to M1\mathrm { M } _ { 1 } strikes M2\mathrm { M } _ { 2 } and after two reflections the ray 2 becomes parallel to M2\mathrm { M } _ { 2 } .The angle θ\theta is :

A

00

B

300

C

450

D

600

Answer

600

Explanation

Solution

: Different angles are as shown in figure.

In triangle, ABC,θ+θ+θ=180∘,θ=60∘\mathrm { ABC } , \theta + \theta + \theta = 180 ^ { \circ } , \theta = 60 ^ { \circ }