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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 upper half of an inclined plane of inclination θ is perfectly smooth while lower
- The effective length of magnet is 31.4 cm and its pole strength is 0.8Am.
- A nucleus of mass number 220, initially at rest, emits an α-particle. If the Q-value
- A body starts from rest with an acceleration of 2 m/s². After 5 second,
- At a given temperature the root mean square velocities of oxygen and hydrogen
Topics: Ray Optics (94)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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