Power Of Lens
Easyphysics
Power P of lens (f in meters) equals?
Select the correct option:
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.
đ Solution Hidden from View
Submit your answer to unlock the detailed step-by-step solution.
More power of lens Practice Questions
About This Question
- Subject
- physics
- Chapter
- optics
- Topic
- power of lens
- Difficulty
- Easy
- Year
- 2025
Solution
Correct 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.
This easy difficulty physics question is from the chapter optics, covering the topic of power of lens. It appeared in the 2025 exam.
Looking for more practice? Explore all physics questions or browse optics questions on RankGuru.