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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
- An objective moves ,starting from rest through a resistive medium
- During an adiabatic process, the cube of the pressure is found to be inversely
- Three unequal resistors in parallel are equivalent to a resistance 1 Ω.
- Steam at 100⁰C is passed into 20 g of water at 10°C. When water acquires a temperature
- Energy bands in solids are a consequence of
Topics: Ray Optics (94)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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