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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
- A 36 Ω galvanometer is shunted by resistance of 4 Ω. The percentage of the total current
- A person holding a rifle (mass of person and rifle together is 100 kg) stands on a smooth
- A particle under the action of a constant force moves from rest upto 20 seconds
- A solenoid 1.5 m long and 0.4 cm in diameter possesses 10 turns per cm length
- In a circuit, the current lags behind the voltage by a phase difference of π/2.
Topics: Ray Optics (94)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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