Photoelectrons Are Ejected When Monochromatic Light Shines on a Freshly-Prepared

question 13

Multiple Choice

Photoelectrons are ejected when monochromatic light shines on a freshly-prepared (oxide-free) 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)increase the frequency and intensity of the light, and also the area illuminated.
• E)increase the intensity of the light and the area illuminated, but not the frequency.

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