Semiconductor Materials – 2 – 8

86. A semiconductor has …….. band.

(a) almost empty valence
(b) almost empty conduction
(c) almost full conduction
(d) none of the above

ANSWER

EXPLANATION

87. In a semiconductor, the energy gap between valence and conduction bands is about ……..

(a) 15 eV
(b) 100 eV
(c) 50 eV
(d) 1 eV

ANSWER

EXPLANATION

88. A semiconductor has …….. band.

(a) almost empty valence
(b) almost empty conduction
(c) almost full conduction
(d) none of the above

ANSWER

EXPLANATION

89. In a semiconductor, the energy gap between valence and conduction bands is about ……..

(a) 15 eV
(b) 100 eV
(c) 50 eV
(d) 1 eV

ANSWER

EXPLANATION

90. A semiconductor is formed by …….. bonds.

(a) covalent
(b) electrovalent
(c) co-ordinate
(d) none of the above

ANSWER

EXPLANATION

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