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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
- If ∆Q>0 when heat flows into a system, ∆W>0 when work is done on the system
- In an inductor when current changes from 2 A to 18 A in 0.05 sec, the e.m.f. induced
- A small part of the rim of a fly wheel breaks off while it is rotating at a constant
- Light emitted during the de excitation of electron from n=3 to n=2, when incident
- Four point masses, each of value m, are placed at the corners of a square ABCD
Topics: Ray Optics (94)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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