Question:
Two thin lenses of power +3D and -1D are held in contact with each other. Focal length of the combination would be:
Two thin lenses of power +3D and -1D are held in contact with each other. Focal length of the combination would be:
Updated On: Apr 25, 2025
- 5m
- 50cm
- 10m
- 100cm
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The Correct Option is B
Solution and Explanation
The correct option is (B): 50cm
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Top Questions on Images Formed By Lenses
- Which of the following statement(s) is/are correct?
(A) The power of a lens is the ability of the lens to converge or diverge the incident rays.
(B) S.I unit of the power of a lens is dioptre while focal length is in centimetres
(C) For a lens of larger focal length, power is smaller
(D) In any combination of lenses, the power of combination is not algebraic addition of power of combined lenses
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