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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
- In insulators (CB is Conduction Band and VB is Valence Band)
- In a transistor the collector current is always less than the emitter current
- A uniform wire of resistance 9Ω is joined end-to-end to form a circle. Then
- The coherence of two light sources means that the light waves emitted have
- A small object of uniform density rolls up a curved surface with an initial velocity
Topics: Ray Optics (94)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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