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

Gujarat BoardEnglish MediumSTD 12 SciencePhysicsSemiconductor Electronic: Material, Devices And Simple Circuits1 Mark
MCQ
On increasing the temperature of a semi$-$conductor material:
  • A
    Density of charge$-$carrier as well as their mobilities both increases.
  • ✓
    Density of charge$-$carriers increases, but their mobilities decreases.
  • C
    Density of charge$-$carries decreases, but their mobilities increases.
  • D
    Both density of charge$-$carriers as well as their mobilities decreases.
✓

Answer

Correct option: B.
Density of charge$-$carriers increases, but their mobilities decreases.
On increasing the temperature of a semi$-$conductor material, the density of charge increases which apparently increases the hinderance and thus decreases their mobility.

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