Photoelectric Effect
Tut 3

1. The frequency of a photon of light is 3 x 1015Hz. It is shone onto nickel metal which has a work function of 8 x 10-19J. 1.

1.1. Calculate the energy of the photon.

1.2. Calculate the kinetic energy of the ejected electrons.

1.3. Calculate the speed of the electrons.

1.4. What would happen to the photo-electron speed if the same light was made brighter?
No change.
The energies would be unaffected if the light was made brighter.

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