$8\mathrm{.}26$ For $=100$ and $r_2=100k,$ contrast the Wilsoe mirror and the simple mirror by evaluating the transfer$-$ratio emor due to finite $,$ and the output resistance.

Ans. Trander$-$ratio erme: $0\mathrm{.}02\%$ for Wilson as opposed to $2\%$ for the simple cincuit; $R=5M$ for Wilsoe compared to $100k$ for the simple circuit