Classical Free Electron Theory
Quiz by Arun Kumar A
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- Q1
Ferromagnetism couldn’t be explained by this theory.
Zone theory
Quantum free electron theory
Classical free electron theory
Band Theory
30s - Q2
What is the gap between valence and conduction band called?
d) All the above
c)Conduction band
a)Forbidden band
b) Filled band
30s - Q3
With an increase in temperature the electrical conductivity of an intrinsic semiconductor
Decreases
First increases then decreases
Increases
Remains same
30s - Q4
Most commonly used semiconductor material is
None of the above.
Mixture of silicon and germanium
Germanium
Silicon
30s - Q5
When the diode is forward biased, it is equivalent to
a on switch
A high resistance
An Off-switch
None of the above
30s - Q6
Which of the following phenomenon can not be explained by classical free electron theory?
Photoelectric Effect
Blackbody radiation
Compton Effect
All the Above
30s - Q7
In the Conclusion of Band theory of solids if p tends to infinity, the energy gives
continuous energy spectrum
No energy spectrum
discrete energy spectrum
constant energy spectrum
30s - Q8
if P tends to zero the energy spectrum is
discrete
continuous
no spectrum
non continuous
30s - Q9
In insulators, the energy gap between conduction band and valence band are in the order of ________
3 eV
6 eV
0 eV
1 eV
30s - Q10
In semiconductors, the valence band and conduction are separated by narrow forbidden energy of the order of ____________________
> 3 eV
= 3 eV
<3 eV
All the above
30s