Physics, asked by maths4995, 1 year ago

the focal length of a convex lens is 20 cm what will be power of lens


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Answers

Answered by ravi268333
6

focal length= 20 CM

power = 100/ f

= 100/20

= +5 D

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Answered by vivu
3
Power = 1/focal length

Therefore,

1/0.2m is the power in this case

1/0.2m=100/20=5 D

D or dioptre is the unit of power
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