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1
AIEEE 2004
MCQ (Single Correct Answer)
+4
-1
The manifestation of band structure in solids is due to
A
Bohr's correspondence principle
B
Pauli's exclusion principle
C
Heisenberg's uncertainty principle
D
Boltzmann's law
2
AIEEE 2004
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
When $$npn$$ transistor is used as an amplifer
A
electrons move from collector to base
B
holes move from emitter to base
C
electrons move from base to collector
D
holes move from base to emitter
3
AIEEE 2003
MCQ (Single Correct Answer)
+4
-1
A strip of copper and another of germanium are cooled from room temperature to $$80K.$$ The resistance of
A
each of these decreases
B
copper strip increases and that of germanium decreases
C
copper strip decreases and that of germanium increases
D
each of these increases
4
AIEEE 2003
MCQ (Single Correct Answer)
+4
-1
The difference in the variation of resistance with temperature in a metal and a semiconductor arises essentially due to the difference in the
A
crystal structure
B
variation of the number of charge carries with temperature
C
type of bonding
D
variation of scattering mechanism with temperature
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