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(a) Work function of the Aluminum is 4.08 eV. What is the threshold frequency required to produce photoelectrons from aluminum? Classify electromagnetic radiations that

 

(a) Work function of the Aluminum is 4.08 eV. What is the threshold frequency required to produce photoelectrons from aluminum? Classify electromagnetic radiations that can produce photoelectrons. If light of frequency 4 x 1015 Hz is used to illuminate a piece of aluminum, then what is the maximum energy and speed of emitted photoelectrons? If the light described in part (ii) is increased by a factor of 2 in intensity, what would happen the maximum kinetic energy of photoelectrons?

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