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Two plane mirror are inclined at angle theta with each other . a ray of light strikes one of them . find its deviation after it has been reflected twice once each mirror

Two plane mirror are inclined at angle theta with each other . a ray of light strikes one of them . find its deviation after it has been reflected twice once each mirror

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Grade:12

1 Answers

Rituraj Tiwari
askIITians Faculty 1792 Points
one year ago
∠BAD=x ∠ABD+yis two incidence angle⇒∠OBA=90−y ∠OAB=90−x
ΔOAB;θ+90−y+90−1=180
⇒x+y=θ
Total deviation is2(90−x)+2(90−y)
=360−2(x+y)
=360−20

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