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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.
Related Questions: - A thin glass(refractive index 1.5) lens has optical power of -5D in air.
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Topics: Ray Optics
(94)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A thin glass(refractive index 1.5) lens has optical power of -5D in air.
- A wheel of mass 10 kg has a moment of inertia of 10 kgm² about its own axis
- The momentum of a photon of energy 1 MeV in kg m/s will be
- RMS velocity of gas is proportional to
- Ratio of longest wavelengths corresponding to Lyman and Balmer series in hydrogen
Topics: Ray Optics (94)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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