Question

find power of concave lens of focal length 25 CM​

Answer 1

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What is the power of a concave lens of focal length 25cm?

Solution:

Here, P=? f=-25cm As P=100f,f=100-25=-4dioptre.

Answer 2

Answer:

here is ur answer

Explanation:

P=?, f=-25cm As P=100, f=100-25= -4 dioptre