1.

The forbidden energy band gap in conductors, semiconductors and insulators are \[E{{G}_{1}},\,E{{G}_{2}}\]and \[E{{G}_{3}}\] respectively. The relation among them is [MP PMT 1994; RPMT 1997]

A. \[E{{G}_{1}}=E{{G}_{2}}=E{{G}_{3}}\]
B. \[E{{G}_{1}}<E{{G}_{2}}<E{{G}_{3}}\]
C. \[E{{G}_{1}}>E{{G}_{2}}>E{{G}_{3}}\]
D. \[E{{G}_{1}}<E{{G}_{2}}>E{{G}_{3}}\]
Answer» C. \[E{{G}_{1}}>E{{G}_{2}}>E{{G}_{3}}\]


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