Homework Help: science

Posted by centya on Friday, December 14, 2012 at 6:16am.

Light is shone on a metal and photoelectrons are emitted.
Can you tell me the three things from the listbelow which might cause the photoelectron emission to stop.

Decreasing the intensity of the light
Increasing the frequency of the light
Decreasing the wavelength of the light
Increasing the wavelength of the light
Changing the metal
Decreasing the frequency of the light
Increasing the intensity of the light

science - bobpursley, Friday, December 14, 2012 at 6:33am
changing the metal, and decreasing the frequency to below the cutoff frequency. decreasing frequency is the same as increasing wavelength.

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