Power Of Lens
Easyphysics
Power P of lens (f in meters) equals?
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Solution
Incorrect! Answer:
P = 1/f
- Definition: The power of a lens is a measure of its ability to converge or diverge light rays.
- Mathematical Relation: It is quantitatively defined as the reciprocal of the focal length (f).
- Formula: P=f1â.
- Unit: The SI unit of power is the Diopter (D), where 1 D =1Â mâ1.
- Property: A converging (convex) lens has positive power, while a diverging (concave) lens has negative power.
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About This Question
- Subject
- physics
- Chapter
- optics
- Topic
- power of lens
- Difficulty
- Easy
- Year
- 2025
This easy difficulty physics question is from the chapter optics, covering the topic of power of lens. It appeared in the 2025 exam. Practice this and similar questions to strengthen your understanding of optics concepts.
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