AIPMT 2010 Prelims | Semiconductor Electronics Question 72 | Physics

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

500

1000

1250

AIPMT 2010 Prelims

MCQ (Single Correct Answer)

-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 ?

metallic bonding

van der Waal's bonding

ionic bonding

covalent bonding

AIPMT 2010 Prelims

MCQ (Single Correct Answer)

-1

The device that can act as a complete electronic circuit is

junction diode

integrated circuit

junction transistor

zener diode

AIPMT 2010 Prelims

MCQ (Single Correct Answer)

-1

Which one of the following statement is false ?

Pure Si doped with trivalent impurities gives a p-type semiconductor.

Majority carries in a n-type semiconductor are holes.

Minority carries in a p-type semiconductor are electrons.

The resistance of intrinisic semiconductor decreases with increase of temperature.

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