Question

The forbidden energy band gap in conductors, semiconductors and insulators are EG1,EG2 and EG3 respectively. The relation among them is
(a) EG1 = EG2 = EG3
(b) EG1 < EG2 < EG3
(c) EG1 > EG2 > EG3
(d) EG1 < EG2 > EG3

Answer 1

Explanation:

Answer : (b) EG1 < EG2 < EG3

Explanation : Forbidden energy gap is highest for insulator and lowest for conductor.

Answer 2

Answer: (b) EG1 < EG2 < EG3

Explanation:

• As we know the conductors allow eclectric charges to flow so the band gap in this is the least.
• Semiconductors have more band gap then conductors.
• Insulators have the more band gap in them among all.
• So, the correct sequence is EG1 < EG2 < EG3.
• Hence, option b is the correct answer.

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