MCQ
A light of frequency 'v' is incident on the metal surface whose threshold frequency is ' $v_0$ '. If $v=v_0$, then [c = speed of light in medium] ____________.
- ✓the photoelectric effect is possible
- Bemitted. electrons will move with speed of light, c
- Cthe photoelectric effect is not possible
- Demitted electrons will move with speed less than c
