Find the power of a convex lens if the image formed is at a distance o – McqOptions

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1.	Find the power of a convex lens if the image formed is at a distance of 20 cm from the lens when the object is placed on the other side of the lens at 25 cm from the optical centre?
A.	1 dioptre
B.	6 dioptre
C.	9 dioptre
D.	2 dioptre
Answer» D. 2 dioptre

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