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A converging lens has a focal …

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A converging lens has a focal length of 250mm.calculate it's power and express it according to sign convention

Posted by Khushi Chaudhary 4 years, 3 months ago

CBSE > Class 10 > Science

1 answers

Adithya Dev A 4 years, 3 months ago

f = 250 mm = 250 / 1000 m = 1/4 m.// Therefore, Power P = 1/f = 1/(1/4) = 4 D.// Since converging lens is CONVEX, P = +4D.

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