Consider the following statement : Extrinsic semiconductors show high electrical conductivity because the impurities are
1. of high conductivity
2. highly mobile
3. highly charged
Which of these statements are NOT correct?
A. 1 and 2
B. 2 and 3
C. 1 and 3
D. 1, 2 and 3
Answer: Option A
Related Questions on Materials and Components
For making a capacitor it is better to have a dielectric having
A. High permittivity
B. Low permittivity
C. Permittivity same as that of air
D. Permittivity which is neither high nor low
As the viscosity of a liquid increases, the relaxation time
A. Remains constant
B. Increases
C. Decreases
D. First decreases then increases

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