The photoelectric work function of a certain metal is 2.5 eV. If the metal is separately irradiated with photons of energy 3 eV and 4.5 eV, the ratio of the respective stopping potentials is
A. 1
B. \(\frac{2}{3}\)
C. \(\frac{1}{4}\)
D. \(\frac{1}{5}\)
Answer:B
The photoelectric work function of a certain metal is 2.5 eV. If the metal is separately irradiated with photons of energy 3 eV and 4.5 eV, the ratio of the respective stopping potentials is
A. 1 B. \(\frac{2}{3}\) C. \(\frac{1}{4}\) D. \(\frac{1}{5}\)