Q: A threshold frequency for photoelectric emission in copper is 1.1 × 10^15 Hz. When light of frequency 1.2 × 10^15 Hz is directed on the copper surface, the maximum energy of emitted particles would be (Planck’s constant is 6.62 × 10^-34 J·s and the charge on the electron is 1.6 × 10^-19 C)