Physics, asked by prakashpatel08pabnvu, 4 months ago

the power of a lens is 4.0d.the focal length and the nature of lens will be​

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Answered by Anonymous
3

Answer:

Power of the lens is -4 D. We know that the power of a lens is defined as the reciprocal of focal length. We know that the focal length of the concave lens is negative. So, the nature of this lens is concave.

Explanation:

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