How is frequency (ν) defined for electromagnetic waves?

Frequency (ν) is the number of waves passing a point per second, measured in Hertz (Hz).

What is the photoelectric effect formula?

Photon energy equals binding energy plus kinetic energy of ejected electrons: $$E_{photon} = E_B + E_k.$$

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How is frequency (ν) defined for electromagnetic waves?: Frequency (ν) is the number of waves passing a point per second, measured in Hertz (Hz).
What is the photoelectric effect formula?: Photon energy equals binding energy plus kinetic energy of ejected electrons: $E_{photon} = E_B + E_k$.