Physics, asked by piyush44517, 10 months ago

108.
The focal length of a convex lenses is 20 cm. Its power is
(A) 20 dioptre
(B) 5 dioptre
(C) 1/5 Dioptre
(D) 1/20 dioptre

Answers

Answered by saurbhmoynak02

2

Answer:

Power of lens is reciprocal of focal length

power = 1/20=

B) 5 dioptre

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