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Question
The reflecting surface of two mirrors make an angle of 90° with each other. If a ray incident of one mirror has an angle of incidents of 30°, draw the ray reflected from the second mirror. What will be its angle of reflection?
The reflecting surface of two mirrors make an angle of 90° with each other. If a ray incident of one mirror has an angle of incidents of 30°, draw the ray reflected from the second mirror. What will be its angle of reflection?
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Solution
Let r2 be the angle of reflection from the second mirror.
From laws of reflection,
∠ i 1=∠ r 1 =30°
Now, in ΔABC
θ=180°−60°−90°=30°
⇒i2=60°Hence, r2=60°
The angle of reflection of incident ray is 60°
Let r2 be the angle of reflection from the second mirror.
From laws of reflection,
∠ i 1=∠ r 1 =30°
Now, in ΔABC
θ=180°−60°−90°=30°
The angle of reflection of incident ray is 60°
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