Physics, asked by ankitapradhan549, 4 months ago

3. If the focal length of a lens is 20 CM find the power of the lens

Answers

Answered by Anonymous

1

Answer:

p=1/f if f is in metres.

First convert 20cm to metres, I.e, 0.2m

then p = 1/0.2 = 5

P = 5m

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