Light of a wavelength 2000 angstroms falls on an aluminum, Chemistry

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Light of a wavelength 2000 angstroms falls on an aluminum

Light of a wavelength 2000 Angstroms falls on an aluminum surface. In aluminum 4.2 eV are needed to remove an electron.

a. Explain what is the kinetic energy of the fastest emitted photoelectrons?

b. Define what is the stopping potential?

c. Explain what is the maximum wavelength that can be used to just dislodge an electron from A1?

d. If the intensity of the incident light is 2.0 W/m2, explain what is the average number of photons that strike the metal having an area of 1 meter 2 in a second.

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Chemistry: Light of a wavelength 2000 angstroms falls on an aluminum

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