A photocathode having a work function of 2.4 eV is illuminated with monochromatic light whose photon energy is 3.4 eV. What is maximum kinetic energy of the photoelectrons produced?
(c = 3.00 108 m/s, h = 6.626 10-34 J s, 1 eV = 1.60 10-19 J)
A) 1.6 10-19 J
B) 3.8 10-19 J
C) 4.4 10-19 J
D) 4.9 10-19 J
E) 5.4 10-19 J
Question 2
During a single period, the distance traveled by a wave is
A) one-half wavelength.
B) one wavelength.
C) two wavelengths.
D) more information is needed