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The donor atoms have energy level
 

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Important Questions on Semiconductors

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Physics Crash Course MHT-CET>Chapter 24 - Semiconductors>Exercise 1>Q 27
If the band gap between the valence band and the conduction band in a material is 5.0 eV, then the material is
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Physics Crash Course MHT-CET>Chapter 24 - Semiconductors>Exercise 1>Q 28
In a good conductor the energy gap between the conduction band and the valence band is
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Physics Crash Course MHT-CET>Chapter 24 - Semiconductors>Exercise 1>Q 29
In insulators (C.B. is conduction band and V.B. is valence band)
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Physics Crash Course MHT-CET>Chapter 24 - Semiconductors>Exercise 1>Q 30
The energy gap in case of which of the following is less than 3 eV?
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Physics Crash Course MHT-CET>Chapter 24 - Semiconductors>Exercise 1>Q 31
Energy bands in solids are a consequence of
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Physics Crash Course MHT-CET>Chapter 24 - Semiconductors>Exercise 1>Q 32
The band gaps of an insulator, semiconductor and conductor are respectively Eg1, Eg2 and Eg3. The relationship between them is given as
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Physics Crash Course MHT-CET>Chapter 24 - Semiconductors>Exercise 1>Q 33
Three semiconductors are arranged in the increasing order of their energy gap as follows. The correct arrangement is
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Physics Crash Course MHT-CET>Chapter 24 - Semiconductors>Exercise 1>Q 34

Assertion: The energy gap between the valence band and conduction band is greater in silicon than in germanium.

Reason: Thermal energy produces fewer minority carriers in silicon than in germanium.