Question

In semiconductors at room temperature, which of the following is likely to happen?

(a) The valence band is partially empty and the conduction band is partially filled

(b) The valence band is filled and the conduction band is partially filled

(c) The valence band is filled

(d) The conduction band is empty

I had been asked this question in a national level competition.

The origin of the question is Classification of Metals, Conductors and Semiconductors in section Semiconductor Electronics : Materials, Devices and Simple Circuits of Physics – Class 12

Answer 1

Right choice is (a) The valence band is partially empty and the conduction band is partially filled

Best explanation: In semiconductors at room temperature, the valence band is partially empty and the conduction band is partially filled. The other options are not suitable according to the room temperature condition of semiconductors.