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The equiconvex lens has focal length f. If it is cut perpendicular to the principal axis passing through optical centre, then focal length of each half is
Options
(a) f/2
(b) f
(c) 3f/2
(d) 2f
Correct Answer:
2f
Explanation:
When an equiconvex lens is cut parallel to principal axis, then focal length remains the same and when the lens is cut perpendicular to principal axis, then its focal length becomes twice the original.
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Topics: Ray Optics
(94)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A rocket is fired upward from the earth surface such that it creates an acceleration
- The time period of bar magnet is doubled when magnetic field is reduced
- A satellite A of mass m is at a distance r from the centre of earth. Another satellite
- An amplifier has a voltage gain Av=1000. The voltage gain in dB is
- If the cold junction of a thermo-couple is kept at 0⁰C and the hot junction is kept
Topics: Ray Optics (94)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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