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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 sphere of 4cm radius is suspended with in a hollow sphere of 6cm radius. If the inner
- A particle with total energy E is moving in a potential energy region U(x)
- Two spherical conductors A and B of radii 1 mm and 2 mm are separated by a distance
- To convert a 800 mV range millivoltmeter of resistance 40Ω into an ammeter of 100 mA
- A neutron is moving with a velocity u.It collides head on and elastically with an atom
Topics: Ray Optics (94)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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