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.
1.1.

1.2. Calculate the kinetic energy of the ejected electrons.
1.2.

1.3. Calculate the speed of the electrons.
1.3.

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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