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Q. The graph between the lateral magnification $(m)$ produced by a lens and the distance of the image $(v)$ is given by

Ray Optics and Optical Instruments

Solution:

For a lens $m=\frac{f-v}{f}$
$ \Rightarrow m=\left(-\frac{1}{f}\right) v+1$ Comparing
this equation with $y=m x+c$ (equation of straight line)
image