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Photoelectrons are ejected when monochromatic light shines on a sodium surface. In order to obtain the...

Photoelectrons are ejected when monochromatic light shines on a sodium surface. In order to obtain the maximum increase in the number of electrons ejected per second, the experimenter needs to

a. increase the frequency of the light.

b. increase the intensity of the light.

c. increase the area illuminated by the light.

d. do all of the above.

e. do only (b) and (c) above.

** Brief Explanation Please.

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