Which of the following statements are true for the photo-electric effect? (selec

Question

Which of the following statements are true for the photo-electric effect? (select true or false)

The maximum energy of the ejected electrons varies linearly with the frequency of the incoming photons.

The maximum energy of the ejected electrons is proportional to the velocity of the photons.

The maximum energy of the ejected electrons is proportional to the intensity of the incoming photons.

The frequency of the photons must be larger than a certain minimum value in order to eject electrons from the

Which of the following statements are true for the photo-electric effect? (select true or false) The maximum energy of the ejected electrons varies nearly with the frequency of the incoming photons The maximum energy of the ejected electrons is proportional to the velocity of the photons. The maximum energy of the ejected electrons is proportional to the intensity of the incoming photons The frequency of the photons must be larger than a certain minimum value in order to eject electrons from the metal Submit Answer Tries 0/6

Explanation / Answer

The maximum energy of the ejected electrons varies linearly with the frequency of the incoming photons. TRUE
The maximum energy of the ejected electrons is proportional to the velocity of the photons. FALSE
The maximum energy of the ejected electrons is proportional to the intensity of the incoming photons. FALSE
The frequency of the photons must be larger than a certain minimum value in order to eject electrons from the metal. TRUE

The photoelectric effect equation KE = hf - W
In order to eject, hf must be greater than work function W so there is minimum freq given by f >W/h
Also, KE is linearly prop to photon freq.

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