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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 thermocouple is made from two metals, antimony and bismuth. If one junction
- A slab consists of two parallel layers of two different materials of same thickness
- If the momentum of electron is changed by P, then the de-Broglie wavelength
- A spherical drop of mercury having a potential of 2.5 v is obtained as a result
- The equations of motion of a projectile are given by x=36 t metre and 2y=96t-9.8t²
Topics: Ray Optics (94)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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