Practicing Success

Target Exam

CUET

Subject

Physics

Chapter

Semiconductors and Electronic Devices

Question:
If light of energy higher than the forbidden gap falls on a semiconductor, what can we best say about the electrons ?
Options:
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
Correct Answer:
The electrons move from valence band to conduction band.
Explanation:
The electron gains the energy from the photon and jumps into the conduction band.