![define the power of lens. the power of lens is +2.0D. find the focal length of the lens, explain with - Brainly.in define the power of lens. the power of lens is +2.0D. find the focal length of the lens, explain with - Brainly.in](https://hi-static.z-dn.net/files/ddc/4ddda31a6eb6ecf8c1eeed2b079be88e.jpg)
define the power of lens. the power of lens is +2.0D. find the focal length of the lens, explain with - Brainly.in
![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://dwes9vv9u0550.cloudfront.net/images/2466609/e6f92879-8c11-4c90-9094-eab0e7276b22.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? 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)