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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
- One coolie takes 1 minute to raise a suitcase through a height of 2 m
- In an L-C-R series resonant circuit, the capacitance is changed from C to 4C.
- In which of the following heat loss is primarily not due to convection?
- If α (current gain) of transistor is 0.98, then what is the value of β
- Consider a compound slab consisting of two different materials having equal thickness
Topics: Ray Optics (94)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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