The relation between the linear magnification \[m,\] the object distan – McqOptions

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1.	The relation between the linear magnification \[m,\] the object distance \[u\] and the focal length \[f\] is
A.	\[m=\frac{f-u}{f}\]
B.	\[m=\frac{f}{f-u}\]
C.	\[m=\frac{f+u}{f}\]
D.	\[m=\frac{f}{f+u}\]
Answer» C. \[m=\frac{f+u}{f}\]

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