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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 an LCR circuit, capacitance is changed from C to 2C. For the resonant frequency
- In Young’s double slit experiment, when wavelength used is 6000Å and the screen
- The fundamental frequency of a closed organ pipe of length 20 cm is equal to the second
- A road of width 20 m forms an arc of radius 15 m,its outer edge is 2m higher than
- A particle doing SHM has amplitude=4 cm and time period = 12 sec. The ratio between times
Topics: Ray Optics (94)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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