During a process described by the photoelectric effect

Reference no: EM13609112

During a process described by the photoelectric effect, ultraviolet light can be used to charge a piece of metal.

(a) If such light is incident on a slab of conducting material and electrons are ejected with enough energy that they escape the surface of the metal, how long before the metal has a net charge of +1.60 nC if 1.11 106 electrons are ejected per second?

(b) If 1.26 eV is needed to eject an electron from the surface, what is the power rating of the light beam? (Assume this process is 100% efficient.)

Reference no: EM13609112

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