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1
AIPMT 2010 Prelims
MCQ (Single Correct Answer)
+4
-1
Which one of the following statement is false ?
A
Pure Si doped with trivalent impurities gives a p-type semiconductor.
B
Majority carries in a n-type semiconductor are holes.
C
Minority carries in a p-type semiconductor are electrons.
D
The resistance of intrinisic semiconductor decreases with increase of temperature.
2
AIPMT 2010 Prelims
MCQ (Single Correct Answer)
+4
-1
The device that can act as a complete electronic circuit is
A
junction diode
B
integrated circuit
C
junction transistor
D
zener diode
3
AIPMT 2010 Prelims
MCQ (Single Correct Answer)
+4
-1
Which one of the following bonds produces a solid that reflects light in the visible region and whose electrical conductivity decreases with temperature and has high melting point ?
A
metallic bonding
B
van der Waal's bonding
C
ionic bonding
D
covalent bonding
4
AIPMT 2010 Prelims
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
A common emitter amplifier has a voltage gain of 50, an input impedance of 100 $$\Omega $$ and an output impedance of 200 $$\Omega $$. The power gain of the amplifier is
A
500
B
1000
C
1250
D
50
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