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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
- If force(F),length(L) and time(T) be considered fundamental units, then the units of mass
- The resistance of a carbon resistor of colour code Red-Red Green Silver is(in kΩ)
- A ray of light is incident at an angle of incidence i, on one face of a prism
- Activity of a radioactive sample decreases to (1/3)rd of its original value
- A particle of mass 100g tied to a string is rotated along a circle of radius 0.5 m
Topics: Ray Optics (94)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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