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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
- Surface tension of a solution is 30 x 10⁻² N/m. The radius of the soap bubble is 5 cm
- Two parallel long wires carry currents i₁ and i₂ with i₁ > i₂ .
- Photons of 5.5 eV energy fall on the surface of the metal emitting photoelectrons
- Three identical spherical shells, each of mass m and radius r are placed
- A particle moving in a straight line covers half the distance with speed of 3 m/s
Topics: Ray Optics (94)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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