Post-Module Assessment Q15

[Sana_Mian_3G]

Were we given an equation to solve this problem?

If 1 million high energy photons hit a metal surface what is the maximum number of electrons that could be ejected from the metal surface?
A. 100,000
B. 0.5 Million.
C. < 1 Million.
D. 1 Million.
E. None of the above

[Manu Vohra 1L]

There is no equation to solve this. During the video module, professor Lavelle states that one photon can only dislodge one electron (assuming it has a high enough energy to do so). Therefore, if 1 million photons hit a metal surface, the absolute maximum number of electrons that could be ejected would have to be 1 million as well (1:1 ratio).