\textbf{58--} An electron in a hydrogen atom is at level $n = 4$. This electron goes directly to level $n' = 1$ and emits a photon that hits a cesium metal with work function $5.2\ \text{eV}$. What is the maximum kinetic energy of the photoelectrons emitted from the cesium metal? ($E_R = 13.6\ \text{eV}$)
\[
\text{(1)}\ 7.55 \qquad \text{(2)}\ 6.25 \qquad \text{(3)}\ 5 \qquad \text{(4)}\ 4
\]
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