Physics, asked by storeofmumbai184, 9 months ago

What is focal length of lens if it has power=4d

Answers

Answered by haripriya200365

1

Explanation:

power of lens is reciprocal to focal length

p=4D

p=100/f (in cm)

4=100/f

f=100÷4

therefore,

focal length of lens=25cm

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