Two plane mirrors M 1 and M2 are inclined at angle θ as shown in the figure. A ray of light 1, which is parallel to M1 strikes M2 and after two reflections, the ray 2 becomes parallel to M2. The angle θ is

Question

Two plane mirrors M 1 and M2 are inclined at angle θ as shown in the figure. <img class="img-fluid question-image" alt="image" src="https://cdn.tardigrade.in/img/question/physics/87ea0999f73b1d40fb3d9944a80e1b63-.png" /> A ray of light 1, which is parallel to M1 strikes M2 and after two reflections, the ray 2 becomes parallel to M2. The angle θ is (A) 0° (B) 30° (C) 45° (D) 60°

Tardigrade Admin · Accepted Answer

Different angles are as shown in figure. <img class="img-fluid question-image" alt="image" src="https://cdn.tardigrade.in/img/question/physics/aa9212e60c37a1da6b30291184e9c5a6-.png" /> In triangle ABC, θ + θ+ θ = 180°, θ = 60°

Q. Two plane mirrors $M_{1}$ and $M_{2}$ are inclined at angle $θ$ as shown in the figure.

A ray of light $1$ , which is parallel to $M_{1}$ strikes $M_{2}$ and after two reflections, the ray $2$ becomes parallel to $M_{2}$ . The angle $θ$ is

$0^{\circ}$

$3 0^{\circ}$

$4 5^{\circ}$

$6 0^{\circ}$

Different angles are as shown in figure.

In triangle $A BC$ ,
$θ + θ + θ = 18 0^{\circ}$ ,
$θ = 6 0^{\circ}$

Q. Two plane mirrors M1​ and M2​ are inclined at angle θ as shown in the figure. A ray of light 1, which is parallel to M1​ strikes M2​ and after two reflections, the ray 2 becomes parallel to M2​. The angle θ is

0∘

30∘

45∘

60∘