![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
Define power of lens. What is the S. I. unit of power of a lens? If power of lens is +2D what is the nature and focal length of the lens? -
![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
![Define power of a lens. What is its SI unit .One student uses a lens of focal length 50cm and another - Brainly.in Define power of a lens. What is its SI unit .One student uses a lens of focal length 50cm and another - Brainly.in](https://hi-static.z-dn.net/files/d1e/ec310c424854befcb01b5ef4ccff798b.jpg)
Define power of a lens. What is its SI unit .One student uses a lens of focal length 50cm and another - Brainly.in
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