Home / Semiconductor Materials – 4 – 7

Semiconductor Materials – 4 – 7

181. The typical example of semiconductor is :

(a) Platinum
(b) Quartz
(c) Germanium
(d) Mica

Answer
Answer : (b)

Explanation
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182. In Semiconductor, like silicon, the unit cell is :

(a) A simple cube
(b) Hexagonal
(c) Face cantered cube
(d) Triclinic

Answer
Answer : (b)

Explanation
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183. The distinction between conductors, insulators and semiconductor is largely concerned with :

(a) Their ability to conduct current
(b) Relative width of energy gap
(c) binding energy of their electrons
(d) The type of crystal lattice

Answer
Answer : (b)

Explanation
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184. The width of forbidden gap for insulators (P), semiconductor (Q) and metals (R) are such that :

(a) Width in (P) is low, (Q) is high and (R) is overlapped
(b) Width in (P) is high, (Q) is small and (R) is very – very small
(c) Width in (P) is wide, (Q) is relatively small and (R) is overlapped
(d) None of the above

Answer
Answer : (c)

Explanation
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185. Semiconductor atoms are held together by :

(a) Ionic bond
(b) Covalent bond
(c) Vander Wall’s bond
(d) Metallic bond

Answer
Answer : (b)

Explanation
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