Question

The relation between the linear magnification m the object distance u and the focal length f is

Answer 1

Answer:

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Answer 2

Answer:

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Explanation:

Linear magnification:

m=v/u

mu=v------♡

Also, by lens formula:

1/f=1/v-1/u

1/f=1/mu-1/u (From ♡)

1/f=1/mu-m/mu

1/f=(1-m)/mu

mu=(1-m)f

mu/(1-m)=f