CUET Preparation Today
| If light of energy higher than the forbidden gap falls on a semiconductor, what can we best say about the electrons ? |
The electrons move from conduction band to valence band. The electrons move from valence band to conduction band. Electrons stay in valence band and oscillate with higher energy Electrons stay in conduction band and oscillate with higher energy |
| The electrons move from valence band to conduction band. |
| The electron gains the energy from the photon and jumps into the conduction band. |
