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Two thin lenses when placed in contact, then the power of combination is +10 D. If they are kept 0.25 m apart, then the power reduces to +6 D. The focal lengths of the lenses (in m) will be
Options
(a) 0.5 and 0.125
(b) 0.5 and 0.75
(c) 0.125 and 0.75
(d) both have the same focal length 1.25
Correct Answer:
0.5 and 0.125
Explanation:
No explanation available. Be the first to write the explanation for this question by commenting below.
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Topics: Ray Optics
(94)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- An alpha nucleus of energy 1/2 mv² bombards a heavy nuclear target of charge Ze
- If two slits in Young’s experiment are 0.4 mm apart and fringe width on a screen
- Two radiations of photons energies 1 eV and 2.5 eV, successively
- In Young’s double slit experiment, the ratio of maximum and minimum intensities
- A body starts from rest, what is the ratio of the distance travelled by the body
Topics: Ray Optics (94)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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