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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)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A source of unknown frequency gives 4 beats/s, when sounded with a source harmonic
- The radii of circular orbits of two satellites A and B of the earth, are 4R and R
- A body of mass 3 kg acted upon by a constant force is displaced by S meter
- An a.c. supply gives 30 volt r.m.s which passes through a 10Ω resistance.
- When a ball is thrown up vertically with velocity vₒ,it reaches a maximum height
Topics: Ray Optics (94)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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