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JEE PHYSICS MCQ: SEMI CONDUCTOR DEVICES
1
Medium
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Application
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Determine the number density of donor atoms which have to be added to an intrinsic germanium semiconductor to produce an -type semiconductor of conductivity , given that the mobility of electron in -type Ge is / Vs. Neglect the contribution of holes to conductivity.
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Correct option: A
Option A () is correct because the number density of donor atoms is calculated using the conductivity, electron charge, and electron mobility.
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