Question

A camera lens has a focal length of 197 mm . How far from the lens...

A camera lens has a focal length of 197 mm .

How far from the lens should the subject for the photo be if the lens is 20.4 cm from the film?

s= (answer in cm)

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Answer #1

The lens equation is, Rearrange the equation for s fs fs (19.7 cm)(20.4 cm) 19.7 cm -20.4 cm --574 cm The negative sign indic

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