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The forbidden energy gap of dielectrics is __________

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The forbidden energy gap of dielectrics is __________

(a) Less than 1.2 eV

(b) Greater than or equal to 1.2 eV

(c) Less than 3 eV

(d) Greater than or equal to 3 eV

This question was posed to me by my college director while I was bunking the class.

This is a very interesting question from Dielectric Polarisation topic in chapter Dielectrics of Engineering Physics II

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Right choice is (d) Greater than or equal to 3 eV

The best I can explain: Dielectrics are the materials devoid of free charges. An ideal dielectric is one which is completely devoid of charges. They have a forbidden energy gap of >=3eV.

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