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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
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Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Ice is wrapped in black and white cloth. In which cases more ice will melt
- A wheel of mass 10 kg has a moment of inertia of 10 kgm² about its own axis
- The cylindrical tube of a spray pump has radius R, one end of which has n fine holes,
- Charge passing through a conductor of cross-section area A=0.3 m² is given
- The electric field part of an electromagnetic wave in a medium is represented by
Topics: Ray Optics (94)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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