maximum kinetic energy

Question

Maximum kinetic energy of emitted electrons K_max equals?

RankGuru · Accepted Answer

1. **Einstein's Photoelectric Equation**: Based on energy conservation, the energy of an incident photon ($hf$) is partially used to liberate the electron (work function $\phi$) and the remainder appears as the maximum kinetic energy ($K_{max}$) of the electron.
2. **Equation**: $hf = \phi + K_{max}$.
3. **Rearranging for K_max**: $K_{max} = hf - \phi$.
4. **Implication**: $K_{max}$ depends linearly on the frequency of the incident radiation and is independent of its intensity.

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maximum kinetic energy

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