The energy gap between the top of the valence band and bottom of the conduction band is called the energy band gap $(E_g)$. Depending upon the materials, the gap can be:

Question

The energy of a photon of sodium light ($\lambda = 589 \, \text{nm}$) is equal to the band gap of a semiconducting material. The minimum energy required to create a hole-electron pair is:

Answer 1

The energy band gap ($E_g$) is material-dependent:
Insulators possess a large, positive $E_g$.
Semiconductors exhibit a small, positive $E_g$.
Conductors have an effectively zero or negative $E_g$ due to overlapping valence and conduction bands.

Firm 2	Cooperate	Compete
Firm 1	5, 5	0, 10
Compete	10,0	2, 2

The energy gap between the top of the valence band and bottom of the conduction band is called the energy band gap \((E_g)\). Depending upon the materials, the gap can be:

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The Correct Option is D

Solution and Explanation

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