The photoelectric effect is the emission of electrons from a material caused by electromagnetic radiation. The lowest frequency that will cause the photoelectric effect in aluminum is 9.865 x 10 Hz, which corresponds to a cut-off wavelength of 303.88 nm.
The photoelectric effect can be observed in aluminum. However, the photoelectric effect will not be observed with orange light. The frequency of orange light is 5.00 × 10 14 Hz, which is less than the threshold frequency.
