Science, asked by AmanKumarDohare, 4 months ago

Find the focal length of a lens whose power is -4 D.

Answers

Answered by aafiakhan07

1

Answer:

Focal length f= 1/p So according to the question power is +2.0 D f= 1/2.0 = 0.5 m In centimeter ...the focal length is 50cm.

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