Consider the following statements about semiconductors?
1. The forbidden energy gap in semiconductors lies between the valence band and conduction band.
2. The forbidden energy gap in germanium at 0 K is about 0.71 eV.
3. Semiconductors have negative temperature coefficient of resistivity.
Which of the statements given above are correct?
A. 1, 2 and 3
B. 1 and 2
C. 2 and 3
D. 1 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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