177- In a photoelectric experiment, the maximum velocity of photoelectrons emitted from the metal surface is $5\times10^5\ \frac{\text{m}}{\text{s}}$. If the work function of the metal is $3.66\ \text{eV}$, what is the wavelength of the incident light on the metal in nanometers? $$\left(\text{hc} = 1.24\ \text{eV}{\cdot}\mu\text{m}\ ,\ e = 1.6\times10^{-19}\ \text{C}\ ,\ m_e = 9\times10^{-31}\ \text{kg}\right)$$ (1) $480$ (2) $360$ (3) $240$ (4) $120$
\textbf{177-} In a photoelectric experiment, the maximum velocity of photoelectrons emitted from the metal surface is $5\times10^5\ \frac{\text{m}}{\text{s}}$. If the work function of the metal is $3.66\ \text{eV}$, what is the wavelength of the incident light on the metal in nanometers?
$$\left(\text{hc} = 1.24\ \text{eV}{\cdot}\mu\text{m}\ ,\ e = 1.6\times10^{-19}\ \text{C}\ ,\ m_e = 9\times10^{-31}\ \text{kg}\right)$$
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(1) $480$ \hspace{1cm} (2) $360$ \hspace{1cm} (3) $240$ \hspace{1cm} (4) $120$
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