Question

The photoelectric work function energy for gold metal is 4.82 eV (per electron). What wavelength of radiation must be directed at the surface of gold metal in order to eject electrons electrons having a maximum kinetic energy of 3.20×10 –20 Joules/electron. [Note: The electron volt (eV) is a common energy unit for work function energies. 1 eV = 1.602×10 –19 Joules.]

-20 The photoelectric work function energy for gold metal is 4.82 eV (per electron). What wavelength of radiation must be directed at the surface of gold metal in order to eject electrons electrons having a maximum kinetic energy of 3.20x10 Joules/electron. [Note: The electron volt (eV) is a common energy unit for work function energies. 1 eV = 1.602x10 Joules.] Wavelength (X) = nm

Answer 1

ht- - 4.?२ev KE = ules ekesbra २० 3. Qo x ID KE 1. 60 २ x ( 6 2 10utu ew Teules ea |, 6 0 Q x |)-1१ -अ 3. 20 x |० 3.20X ১- 2০ ev |।. 6 0 ३ x।0-)9 _। ११7 0. J৭१ ९v

ht-4.2 D.1A 5.०1१ ex hf 1240 AR42.06nm leng phetn. 242. 0mm ५