Second Year Physics Chapter 18 Online MCQ Test for 2nd Year Physics Chapter 18 Electronics Preparation

FSC Part 2 Physics
Chapter 18 Test

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Physics FSC Part 2 Chapter 18 Online MCQ's Test

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Question # 1

Improper bisting of a transistor circiut produces:

Question # 2

In case of op-amp as an inverting amplifier, V+ - V- = 0, this is because

Question # 3

Doping is made comparatively larger in

Question # 4

During negative half cycle of A.c then p-n junction offers.

Question # 5

Photo diode is used for detection of.

Question # 6

The device which is used as amplifier and works with the negative feedback is.

Question # 7

The open loop gain of the amplifier is order of.

Question # 8

The ratio of potential barriers of Ge to Si at room temperatrue is.

Question # 9

The potential barrier for silicon is.

Question # 10

Photo diode detects.

Question # 11

Truth table of logic function.

Question # 12

Which diode works at reverse biasing.

Question # 13

Which factor does not affect the conductivity of PN-Junction diode.

Question # 14

Output resistance of an op amp is

Question # 15

Which one has greater cone of impurity among all:

Question # 16

The sensor of light is.

Question # 17

The device which are required to convert various physical quantities into electric voltage are called.

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FSc Part II Physics Chapter 0 Important MCQ's

Sr.# Question Answer
1 Improper bisting of a transistor circiut produces:
A. Heavy loading of emitter current
B. Distortion in the output output signal
C. Excessive heat at collector terminal
D. Faculty location of load line
2 A light emitting diode emits light only when
A. Reverse biased
B. Forward biased
C. Unbiased
D. None of these
3 Doping is made comparatively larger in
A. Emitter
B. Base
C. Collector
D. P -type semi conductor
4 A diode characteristic curve is a plot between
A. Current and time
B. Voltage and time
C. Voltage and current
D. Forward voltage and reverse voltage
5 The semi conductor diode has the property of
A. Two way conduction
B. Zero conduction
C. One way conduction
D. Amplification
6 Photodiode is used for:
A. Detection of current
B. Detection of heat
C. Detection of light
D. Both a & b
7 The average gap for Germanium at 0K is
A. 1.12 ev
B. 0.02 ev
C. 6.72 ev
D. 7.2 ev
8 Conversion of A.C into D.C is called:
A. Compton effect
B. Rectification
C. Amplification 
D. Pair production
9 In an N-type silicon, which of the following statement is true?
A. Electrons are majority carriers & trivalent atoms are the dopants
B. Electrons are majority carriers & pentavalent atoms are the dopants
C. Holes are minority carriers & pentavalent atoms are the dopants.
D. Holes are minority carriers & trivavalent atoms are the dopants.
10 Which factor does not affect the conductivity of PN-Junction diode.
A. Doping
B. Temperature
C. Voltage
D. Pressure

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