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The radius of the convex surface of a plano-convex lens is 20 cm and the refractive index of material of the lens is 1.5. The focal length of lens is
Options
(a) 30 cm
(b) 50 cm
(c) 20 cm
(d) 40 cm
Correct Answer:
40 cm
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
- The time period of a thin bar magnet in Earth’s magnetic field is T
- Which of the following is or the property of a cathode ray
- A person wants a real image of his own, 3 times enlarged. Where should he stand
- A thin glass(refractive index 1.5) lens has optical power of -5D in air.
- A point charge q is situated at a distance r on axis from one end of a thin
Topics: Ray Optics (94)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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