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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 energy of groundstate (n=1) of hydrogen level is -13.6 eV. The ionistation
- According to Hook’s law, force is proportional to
- A steady current is passing through a linear conductor of non-uniform cross-section.
- The frequency of a light wave in a material is 2 x 10¹⁴ Hz and wavelength is 5000Å.
- Velocities of sound measured in hydrogen and oxygen gas at a given temperature
Topics: Ray Optics (94)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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