![The power of a combination of two lenses X and Y is 5 D. If the focal length of lens X be 15 cm: - YouTube The power of a combination of two lenses X and Y is 5 D. If the focal length of lens X be 15 cm: - YouTube](https://i.ytimg.com/vi/BCMlxJOh43A/maxresdefault.jpg)
The power of a combination of two lenses X and Y is 5 D. If the focal length of lens X be 15 cm: - YouTube
![Answer the following question. What is focal power of a spherical mirror or a lens? What may be the reason for using P = 1f as its expression? - Physics | Shaalaa.com Answer the following question. What is focal power of a spherical mirror or a lens? What may be the reason for using P = 1f as its expression? - Physics | Shaalaa.com](https://www.shaalaa.com/images/_4:42db20c4432243cf9ec08d1708019368.png)
Answer the following question. What is focal power of a spherical mirror or a lens? What may be the reason for using P = 1f as its expression? - Physics | Shaalaa.com
![Simple lens with a positive meniscus and focal power, with notation... | Download Scientific Diagram Simple lens with a positive meniscus and focal power, with notation... | Download Scientific Diagram](https://www.researchgate.net/publication/322487855/figure/fig2/AS:582674137747457@1515931748870/Simple-lens-with-a-positive-meniscus-and-focal-power-with-notation-that-corresponds-to.png)
Simple lens with a positive meniscus and focal power, with notation... | Download Scientific Diagram
![What is meant by power of a lens? Define its SI unit.You have two lenses A and B of focal lengths + 10 cm and - 10 cm, respectively. State the nature What is meant by power of a lens? Define its SI unit.You have two lenses A and B of focal lengths + 10 cm and - 10 cm, respectively. State the nature](https://haygot.s3.amazonaws.com/questions/1851296_494987_ans_982f0adfc651418ea035378bdfbe936e.jpg)
What is meant by power of a lens? Define its SI unit.You have two lenses A and B of focal lengths + 10 cm and - 10 cm, respectively. State the nature
![The power of lens is P = 1f , where ' f ' is focal length of the lens. The dimensions of power of lens is: The power of lens is P = 1f , where ' f ' is focal length of the lens. The dimensions of power of lens is:](https://haygot.s3.amazonaws.com/questions/1529721_1702065_ans_bd2e5874b9eb405bba0de17b6c3583de.jpg)