Question

The work function for a metal is 4 eV. To
eject a photoelectron of zero velocity
from the surface of the metal, the
wavelength of incident light should be
above
describe in chemistry method​

Answer 1

Answer:

hv=hv0+KE for zero velocity KE=0

hv=hv0

hv=4eV

λhc=4eV

λ=4eVh×c

  =4×1.6×10−196.626×10−34×3×108=3100Ao

Hence, the correct option is D

Answer 2

Answer:

Did you mean: The work function for a metal is 4eV. To eject a photoelectron of zero velocity from the surface of the metal, the wavelength of incident light should be above describe in chemistry method