Q. A ray of light incident on the first mirror and parallel to the second is reflected from the second mirror parallel to first mirror. The angle between the mirrors is:
(a) 60°
(b) 75°
(c) 90°
(d) 120°
______
Class Xth / Light : Reflection & Refraction.
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option (a) 60° is correct answer
Assuming angles between two mirrors be θ as pergeometry,
sum of angles of Δ
λ1+λ2=360−20=180+θ
3θ=180 °
θ=60 °
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Continuity of sanskruti's answer:-
The answer is 60°
The question can be answered by various ways
Pls go through attachment for the solution.
In the given attachment only The concept of reflection of light and properties of triangle are used.
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