## A positive lens with focal point ”f” are used to image an object according to the figure below. For what distances ”a”(expressed in ”f”) can we get with the following characteristics;

Question

A positive lens with focal point ”f” are used to image an object according to the figure below. For what distances ”a”(expressed in ”f”) can we get with the following characteristics;

a) Up- and down, smaller and real.

b) Upright, enlarged and virtual.

c) Up- and down, unchanged and real.

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General Physics
4 years
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## Answer ( 1 )

a) a>2f

b) a<f

c) a = 2f