Archive
9th of March 2017
Physics
Q:

brighteness depend on frequency but ejection of electron does not depend on frequency why?

main difference between frequency and intensity

Salman Manzoor - Junior - Class II

Thursday, March 09, 2017 at 18:09:PM

A:

Hi Salman,

Brightness depends on the number of electrons hitting the screen per area. So, it is frequency dependent. Ejection of electrons is also dependent on the frequency. It is called the threshold frequency. So, both are frequency dependent.

Thursday, March 09, 2017 at 18:25:PM