Focal length of a lens is 25 cms. what is its power?
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Answered by
1
Power = 1/focal length
1/25 = power
Power = 1/25 =0.04 diopters.
1/25 = power
Power = 1/25 =0.04 diopters.
Answered by
2
Focal length of a lens = 25 cm or 0.25 m
Power = 1/ Focal length
Power = 1 / 0.25
Power = + 4 D
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