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Which of the following lenses would you prefer to use while reading small letters found in dictionary?
A convex lens of focal length 50 cm
A concave lens of focal length 50 cm
A convex lens of focal length 5 cm
A concave lens of focal length 5 cm
Convex lens is used as magnifying glass. For better performance its focal length should be small.
By: santosh ProfileResourcesReport error
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