Question

Find the power of concave lens of focal length 25 cm.
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Answer 1

Answer:

We have to find the power of the concave lens. Therefore, the power of the lens is -4diopters.

Explanation:

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Answer 2

Answer:

Here, P=? f=−25cm

 As  P=100/f, f=100/ −25= −4dioptre

Explanation:

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