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

Photo diode is used for detection of.

Question # 2

For normal transistor the emitter current can be given by

Question # 3

The impurity in the germinium is usually in the ratio of

Question # 4

The chargeless region after formation of Pn junction is called:

Question # 5

In a transistor, collector current is controlled by:

Question # 6

Which diode works at reverse biasing.

Question # 7

Which is not fundamental logic gate.

Question # 8

A PN junction can not be sued a.

Question # 9

OR gate is represented by:

Question # 10

A device which converts low voltage or current to high voltage or current is called.

Question # 11

An expression for gain of an inverting amplifier is

Question # 12

Logic gate can control some physical parameters like.

Question # 13

Automatic function of street light can be done by the use of.

Question # 14

Transistor was discovered by

Question # 15

In a certain circuit, IB = 40 µA, IC = 20 mA

Question # 16

LDR becomes necessary when op amp is used as a

Question # 17

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

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FSC Part 2 Physics Chapter 18 Online Test MCQ's

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FSc Part II Physics Chapter 0 Important MCQ's

Sr.# Question Answer
1 Which one has greater cone of impurity among all:
A. Emitter
B. Base
C. Collector
D. All are pure
2 Reverse current flows due to
A. Majority charge carriers
B. Minority charge carriers
C. Electrons
D. Holes
3 For automatic Switching of streetlight, the op amplifier is used as.
A. Inductor
B. Converter
C. Comparator
D. Thermistor
4 The ratio Beta in transistor is called.
A. Voltage gain
B. Emitter gain
C. Current gain
D. Nuclear gain
5 Doping is made comparatively larger in
A. Emitter
B. Base
C. Collector
D. P -type semi conductor
6 The impurity in the germinium is usually in the ratio of
A. 1:106
B. 1:104
C. 1:108
D. 1:1010
7 For rectification we use.
A. Transformer
B. Diode
C. Choke
D. Generator
8 The output of two input is zero only when its.
A. Both inputs are zero
B. Either input is zero
C. Both inputs are one
D. Either input is one
9 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
10 A photo diode can turn its current ON and OFF in
A. Micro seconds
B. Mega seconds
C. Nano seconds
D. Mili seconds

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