Four lenses are made from the same type ...

Four lenses are made from the same type of glass, the radius of curvature of each face is given below. Which will have the greatest positive power

10 cm convex and 15 cm convex

5 cm convex and 10 cm concave

) 15 cm convex and plane

20 cm convex and plane

Text Solution

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The correct Answer is:

`1/f=-(mu-1)(1/R_(1)-1/R_(@))=P`

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