The surface of a metal is illuminated with a light of 400 nm. The kinetic energy of the ejected photoelectrons was found to be 1.68 eV. The work function of the metal is (hc = 1240 eV nm)
A. 3.09 eV
B. 1.41 eV
C. 1.51 eV
D. 1.68 eV
Answer:B
The surface of a metal is illuminated with a light of 400 nm. The kinetic energy of the ejected photoelectrons was found to be 1.68 eV. The work function of the metal is (hc = 1240 eV nm)
A. 3.09 eV B. 1.41 eV C. 1.51 eV D. 1.68 eV