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Geometrical Optics question

2013 · Q122
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Geometrical Optics question

2013 · Q122

NEETPhysicsGeometrical OpticsMCQ+4 / −1
Two plane mirrors are inclined at 70o. A ray incident on one mirror at angle, θ\thetaθ after reflection falls on second mirror and is reflected from there parallel to first mirror. The value of θ\thetaθ is
  1. A
    45o
  2. B
    30o
  3. C
    55o
  4. D
    50o
View written solutionFree

Correct answer: D

NEET 2013 (Karnataka) Physics - Geometrical Optics Question 62 English Explanation


$\theta $ + 40° = 90°

$ \therefore $ $\theta $ = 90° – 40° = 50°
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