Question

Photoelectric effect is a phenomenon in which an electron can be ejected from a metallic surface if it is exposed to the light of certain energy.Threshold frequency 0 is the minimum frequency which a photon must possess to eject an electron from a metal. It is different for different metals. Q. If a photon of frequency of 1 x 1015 sec-1 was allowed to hit a metal surface, an electron having 1.988 x 10-19J of kinetic energy was emitted.The threshold frequency of the metal will be: Q. The work function of a metal is 8 x 10-19 J. What is the kinetic energy of the photoelectron ejected from the metal surface if the energy of the incident radiation is 9.9 x 10 -19 J? Q. When the frequency of the incident radiation on a metallic plate is doubled, how will the Kinetic energy of the photoelectrons be affected?

Answer 1

Answer:

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