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A concave mirror of focal length f₁ is placed at a distance d from a convex lens of focal length f₂. A beam of light coming from infinity and falling on this convex lens concave mirror combination returns to infinity. The distance d must be equal
Options
(a) f₁+f₂
(b) (- f₁ + f₂)
(c) 2 f₁ + f₂
(d) (-2 f₁ + f₂)
Correct Answer:
2 f₁ + f₂
Explanation:
No explanation available. Be the first to write the explanation for this question by commenting below.
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Topics: Ray Optics
(94)
Subject: Physics
(2479)
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