railway RRB JE (CBT I + CBT II) Mock Test 2024 Physics Semiconductors Energy Levels in a Crystalline Solid
Which of the following option is correct regarding energy band of electrons?
1
In a crystal each electrons have the same energy level.
2
The energy band below the valence band is called the conduction band.
3
The energy band that includes the energy levels of the valence electrons is called the valence band.
4
The valence band holds those electrons that are responsible for conduction.