Question

focal length is 0.2 then find the P(D)

Answer 1

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HERE'S UR ANSWER...

Power = 1/f
= 1 / 0.2
= 5 D (Ans)

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Answer 2

 Focal length = 0.2 m
Power = ?

Power = 1 / focal length ( in metres )

Power = 1 / 0.2 = 10 / 2 = 5D

Therefore power is 5 Dioptres

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