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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 wheel of mass 10 kg has a moment of inertia of 10 kgm² about its own axis
- A n-p-n transistor is connected in common emitter configuration in a given amplifier.
- When germanium is doped with phosphorus what type of semiconductor is produced?
- A parallel plate capacitor as a uniform electric field E in the space between the plates
- In Young’s experiment, the third bright band for light of wavelength 6000Å
Topics: Ray Optics (94)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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