The transistors in the basic current mirror in Figure 10.2(b) have a finite (beta) and an infinite

Question:

The transistors in the basic current mirror in Figure 10.2(b) have a finite $\beta$ and an infinite Early voltage. The B-E area of $Q_{2}$ is $n$ times that of $Q_{1}$. Derive the expression for $I_{O}$ in terms of $I_{\mathrm{REF}}, \beta$, and $n$.

Figure 10.2(b):-

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