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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
- A particle is moving with a uniform velocity along a straight line path
- A charged oil drop is suspended in a uniform field at 3×10⁴ V/m so that it neither falls
- Steam at 100⁰C is passed into 20 g of water at 10°C. When water acquires a temperature
- A small oil drop of mass 10⁻⁶kg is hanging in at rest between two plates seperated
- The temperature coefficient of resistance of an alloy used for making resistor is
Topics: Ray Optics (94)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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