A magnifying glass is a combination of a convex lens of focal length 5cm and a concave lens of power -5D. If the distance of distinct vision is 20cm calculate the power of the magnifying glass.

A magnifying glass is a combination of a convex lens of focal length 5

1.	A magnifying glass is a combination of a convex lens of focal length 5cm and a concave lens of power -5D. If the distance of distinct vision is 20cm calculate the power of the magnifying glass.
Answer» iven, D=25cm ;P net =16; F net = P ev 100 = 16100 = 425 MAGNIFICATION, M=1+ f net D M=1+ 425 25 =5

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A magnifying glass is a combination of a convex lens of focal length 5cm and a concave lens of power -5D. If the distance of distinct vision is 20cm calculate the power of the magnifying glass.​

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A magnifying glass is a combination of a convex lens of focal length 5cm and a concave lens of power -5D. If the distance of distinct vision is 20cm calculate the power of the magnifying glass.