(Answered) Question a marvelous new metal phonium is found to have a

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Question: A marvelous new metal, phonium, is found to have a work function of 1eV.

a. If a photon of 3eV energy strikes phonium and causes the emission of an electron, what is the maximum kinetic energy that electron can have?

b. Light of wavelength 620nm strikes phonium. What is the maximum energy of electrons emitted by the photoelectric effect under these circumstances?

c. What are two features of the photoelectric effect that support the idea that light energy comes as multiples of some smallest, indivisible packet?

d. What is the highest energy photon that can be produced when electrons that have been accelerated through 40kV stop by a sudden collision with a tungsten anode?

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