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Two lenses of power 15 D and -3 D are placed in contact. The focal length of the combinations is
Options
(a) 10 cm
(b) 15 cm
(c) 12 cm
(d) 8.33 cm
Correct Answer:
8.33 cm
Explanation:
No explanation available. Be the first to write the explanation for this question by commenting below.
Related Questions: - The binding energy of deutron is 2.2 MeV and that of ₂⁴He is 28 MeV.
- Two similar springs P and Q have spring constants Kp and Kq, such that Kp>Kq.
- A p-n photodiode is fabricated from a semiconductor with a band gap of 2.5 eV.
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Topics: Ray Optics
(94)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- The binding energy of deutron is 2.2 MeV and that of ₂⁴He is 28 MeV.
- Two similar springs P and Q have spring constants Kp and Kq, such that Kp>Kq.
- A p-n photodiode is fabricated from a semiconductor with a band gap of 2.5 eV.
- If the angular momentum of any rotating body increase by 200 % , then the increase
- A radiactive substance emits 100 beta particles in the first 2s and 50 beta
Topics: Ray Optics (94)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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