A mirror is inclined at an angle θ with the horizontal and a ray of light is incident on it as shown. Find the angle made by the reflected ray with the horizontal.
A
θ
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B
2θ
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C
θ/2
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D
Zero
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Solution
The correct option is D Zero
From figure, ∠i=90∘−θ ⇒∠r=90∘−θ Therefore, the angle made by the reflected ray with mirror is, =90∘−(90∘−θ)=θ So, the ray is reflected horizontally. It means reflected ray make 0∘ angle with horizontal. Hence, option (d) is the correct answer.