Photoelectric effect is the process where electrons are ejected from certain metal surfaces when light is incident on it. The ejected electrons are called photoelectrons and the current is known as photocurrent. In the photoelectric effect experiment, the electromagnetic (EM) radiations are incident on four types of metal surfaces as shown in TABLE Q3c. Determine the threshold frequency and work function for each metal surface, the maximum kinetic energy and the stopping potential of the photoelectrons ejected from the metal surfaces. Show all calculations. TABLE Q3c Metal surface EM radiation Q Visible (green) R Infrared S Ultraviolet Violet

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Compton effect

The incoming photons' energy must be in the range of an X-ray frequency to generate the Compton effect. The electron does not lose enough energy that reduces the wavelength of scattered photons towards the visible spectrum. As a result, with visible lights, the Compton effect is missing.

Recoil Velocity

The amount of backward thrust or force experienced by a person when he/she shoots a gun in the forward direction is called recoil velocity. This phenomenon always follows the law of conservation of linear momentum.