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Physical Properties of Metals

define work f...

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define work function

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Q. Define threshold frequency and photoelectric work function.

Q. Define the term work function of a metal.

Q. Define the following:
Threshold frequency and work function.

Q. Define the following in photoelectric effect phenomenon:
(a) (i) Work function
(ii) Stopping potential (cut-off potential)
(b) Calculate energy of photon of wavelength

3.31 ˚ A

(a) Calculate the energy of an excited state for hydrogen.

(b) Define threshold frequency of work function.

(c) Work function for

C_{5}

atom is 1.9eV. Calculate kinetic energy for photoemitted electron if

C_{5}

metal is irradiated with radiation of 500nm.

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