What is meant by power of a lens ? Write the SI unit. A student uses a lens of focal length 40 cm and another of - 20 cm. - Sarthaks eConnect | Largest Online Education Community
![Focal Length Formula & Examples | How to Calculate Focal Length - Video & Lesson Transcript | Study.com Focal Length Formula & Examples | How to Calculate Focal Length - Video & Lesson Transcript | Study.com](https://study.com/cimages/multimages/16/camerafocus.jpg)
Focal Length Formula & Examples | How to Calculate Focal Length - Video & Lesson Transcript | Study.com
![Focal length, explained by RP; focal distance, dioptric power, curved mirror, lens equation, microscope, photographic objective, focus, beam radius Focal length, explained by RP; focal distance, dioptric power, curved mirror, lens equation, microscope, photographic objective, focus, beam radius](https://www.rp-photonics.com/img/focal_length.png)
Focal length, explained by RP; focal distance, dioptric power, curved mirror, lens equation, microscope, photographic objective, focus, beam radius
![SOLVED: () Table 1: Calculate the focal length using the Lens equation and complete the tabE (Write three digits after the decimal for each value) u (cm) (cm" 1) (cm) (cm ') SOLVED: () Table 1: Calculate the focal length using the Lens equation and complete the tabE (Write three digits after the decimal for each value) u (cm) (cm" 1) (cm) (cm ')](https://cdn.numerade.com/ask_images/dd703b592a2d483d8af546404f2f65f0.jpg)
SOLVED: () Table 1: Calculate the focal length using the Lens equation and complete the tabE (Write three digits after the decimal for each value) u (cm) (cm" 1) (cm) (cm ')
![What is meant by power of a lens? Write its SI unit. A student uses a lens of focal length 40 cm and another of - 20 cm. Write the nature and What is meant by power of a lens? Write its SI unit. A student uses a lens of focal length 40 cm and another of - 20 cm. Write the nature and](https://i.ytimg.com/vi/Xs5nqOobDdk/maxresdefault.jpg)
What is meant by power of a lens? Write its SI unit. A student uses a lens of focal length 40 cm and another of - 20 cm. Write the nature and
![what is meant by power of a lens? Write its SI unit. A student uses a lens of focal length 40cm and another - Brainly.in what is meant by power of a lens? Write its SI unit. A student uses a lens of focal length 40cm and another - Brainly.in](https://hi-static.z-dn.net/files/d2c/8032dc0ff283dc395436a780f1250f5f.jpg)