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Semiconductor Electronic: Material, Devices And Simple Circuits — Physics STD 12 Science — Question

Bihar BoardEnglish MediumSTD 12 SciencePhysicsSemiconductor Electronic: Material, Devices And Simple Circuits1 Mark
MCQ
Energy gaps between the highest band and the lowest empty bands in elements A, B, C and D are 0,70,530 and 90 kJmol−1. Then,
  • A
    Element A is metal
  • B
    Element C is insulator
  • C
    Element B and D can be semiconductors
  • D
    All are correct conclusion about elements A, B, C and D
✓

Answer

  1. All are correct conclusion about elements A, B, C and D

Explanation:

Energy gaps between the highest band and the lowest empty bands is lowest in metals, moderate in semi conductors and very high in insulators. This suggests us that:

Element A must be a metal, element C must be an insulator and element B and D can be semiconductors.

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