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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
- The current in the windings of a toroid is 2.0 A. There are 400 turns
- A force of 5 N is acting on an object. Displacement of object is 10 m and the work done
- The impurity atoms with which pure silicon may be doped to make it a p-type
- A projectile is fired at an angle of 45° with the horizontal
- A thin film of soap solution (n=1.4) lies on the top of a glass plate (n=1.5).
Topics: Ray Optics (94)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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