# Problem: The magnification of a simple magnifier is increased ifA. the focal length of the lens is increased.B. the focal length of the lens is decreased.C. the diameter of the lens is increased.D. the diameter of the lens is decreased.

###### FREE Expert Solution

In a simple magnifier, the magnification is achieved by placing the object closer to the eye than the eye could normally focus.

The standard close distance of focus is always taken as 25 cm.

95% (137 ratings) ###### Problem Details

The magnification of a simple magnifier is increased if

A. the focal length of the lens is increased.

B. the focal length of the lens is decreased.

C. the diameter of the lens is increased.

D. the diameter of the lens is decreased.

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What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Thin Lens And Lens Maker Equations concept. You can view video lessons to learn Thin Lens And Lens Maker Equations. Or if you need more Thin Lens And Lens Maker Equations practice, you can also practice Thin Lens And Lens Maker Equations practice problems.