Physics WAEC / WASSCE 1993 Mechanics and Properties of Matter
lf Einstein’s photoelectric equation is represented by hf - W = Φ where h is Planck’s constant, f the frequency of incident radiation and W the work function of the material, what does the symbol Φ up stand for?
A
Energy of the photons
B
Maximum Kinetic energy of the ejected electrons
C
Threshold frequency of the photons
D
Stopping potential of the electrons
E
Velocity of the electrons