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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 resistance of a bulb filament is 100 Ω at a temperature of 100⁰C.
- A conducting square frame of side ‘a’ and a long straight wire carrying current I
- A capacitor is used to store 24 watt hour of energy at 1200 volt.
- In the middle of the depletion layer of a reverse-biased P-N junction, the
- A boy whirls a stone in a horizontal circle of radius 1.5 m and at height 2.0 m
Topics: Ray Optics (94)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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