when ultraviolet light of wavelength 300nm is incident on a metal plate,a negative potential of 0 54eV is required to - Physics - Dual Nature Of Radiation And Matter

Question

when ultraviolet light of wavelength 300nm is incident on a metal
plate,a negative potential of 0 54eV is required to stop the
emission of photoelectrons calculate the energy of the incident
photon and the workfunction for the metal in eV

Ravi Gupta · Accepted Answer

energy of the incident radiationE = hcλ = 6
6×10-34×3×108300×10-9 = 6
6×10-19 joule = 6 6×10-191
6×10-19 =6
6 eVEnergy of the emitted photo electron = 0
54 eVthen work function of metal = 6
6-0 54 = 6 06 eV

when ultraviolet light of wavelength 300nm is incident on a metal plate,a negative potential of 0.54eV is required to stop the emission of photoelectrons .calculate the energy of the incident photon and the workfunction for the metal in eV.