Question

The minimum frequency for photoelectric emission in copper is

1.1 1015 Hz. Find the maximum energy of the photoelec-

trons (in electronvolts) when light of frequency 1.5 1015 Hz

is directed on a copper surface.​

Answer 1

Answer:

Threshold frequency for photoelectric emission in Copper is 1.1×10^15Hz. Find the maximum K.E of photoelectrons emitted when light frequency of 1.5×10^15 is directed on Copper surface. = 1.66 eV. Hence, the maximum kinetic energy of the photoelectrons emitted will be 1.66 eV.