Question

what is meant by power of lens find the power of lens whose focal length is -10 cm​

Answer 1

The “power” of a lens is the reciprocal of the focal length. The “power unit”, diopter, is the value when the focal length is expressed in meter. Thus your lens has a power of 1/0.25m = 4 diopter.

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Answer 2

Answer:

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Explanation:

to say or write something back to somebody who has asked you something or written to you