Calculate the power of lens, which has positive focal length of 20 cm

detineerlf 2022-07-17 Answered
Calculate the power of lens, which has positive focal length of 20 cm
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Answers (1)

tiltat9h
Answered 2022-07-18 Author has 14 answers
focal length,
f = + 20   c m = + 0.20   m
Power of lens is given by
p = 1 f
where f is in meters
p = 1 D + 0.20 = + 5 D
So power g given lens is +5D
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