In order to eject an electron from a metal, a photon of a certain minimum energy must strike the surface. (Albert Einstein received the 1921 Nobel prize for his explanation of this phenomenon, known as the photoelectric effect.) This minimum energy is called the work function of the metal. If your lab partner tells you that she has measured that a minimum energy of 7.59e-19 J is required to eject electrons from the metal silver, what is the longest wavelength light (in nanometers) she could use to make the measurement?

Question

In order to eject an electron from a metal, a photon of a certain minimum energy must strike the surface. (Albert Einstein received the 1921 Nobel prize for his explanation of this phenomenon, known as the photoelectric effect.) This minimum energy is called the work function of the metal.

If your lab partner tells you that she has measured that a minimum energy of 7.59e-19 J is required to eject electrons from the metal silver, what is the longest wavelength light (in nanometers) she could use to make the measurement?

 

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