Question

Which expression gives the threshold frequency?

Options

• \[\nu_0=h\phi_0\]

• \[\nu_0=\phi_0+h\]

• \[\nu_0=\frac{h}{\phi_0}\]

• \[\nu_0=\frac{\phi_0}{h}\]

Answer 1

Rearranging \[\phi_0=h\nu_0\] gives \[\nu_0=\frac{\phi_0}{h}\]. The threshold frequency is determined by the work function and Planck’s constant.