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

The average gap for Germanium at 0K is

Question # 2

Greater concentration of impurity is added in.

Question # 3

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

Question # 4

Improper bisting of a transistor circiut produces:

Question # 5

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

Question # 6

NAND gate represented by:

Question # 7

In full wave rectification number of diodes required are equal to.

Question # 8

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

Question # 9

Reverse current flows due to

Question # 10

Light emitting diodes are made from semiconductors.

Question # 11

A two inputs NAND gat with inputs a and b has an output '0' if.

Question # 12

Conversion of A.C into D.C is called:

Question # 13

The gain of transistor amplifier depends upon

Question # 14

Photodiode is used for:

Question # 15

The colour of light emitted by a LED depends on.

Question # 16

Photo diode is used for detection of.

Question # 17

For rectification we use.

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FSc Part II Physics Chapter 0 Important MCQ's

Sr.# Question Answer
1 For normal use:
A. Emitter base function is reversed biased
B. Collector base junction is reserved biased
C. Emitter base junction is forward biased
D. Both c and b
2 The sensor of light is.
A. Transistor
B. LED
C. Diode
D. Light dependent resistance
3 A transistor has:
A. Two regions
B. Three regions
C. Single regions
D. Four regions
4 The device which are required to convert various physical quantities into electric voltage are called.
A. Filters
B. Rectifiers
C. Amplifiers
D. Sensors
5 Base of transistor is of order:
A. 10-11m
B. 106m
C. 10-8m
D. 10-6m
6 The reverse saturation current in a PN junction diode is only due to:
A. Majority carriers
B. Minoritycarriers
C. Acceptor ions
D. Donor ions
7 In a transistor, collector current is controlled by:
A. Collector voltage
B. Base current
C. Collector resistance
D. All of the above
8 One use of a single p-n junction semiconductor in an electrical circuit is a
A. Rectifier
B. Transistor
C. Battery
D. Diode
9 In full wave rectification number of diodes required are equal to.
A. 2
B. 3
C. 4
D. 5
10 The central region of a transistor is called.
A. Emitter
B. Collector
C. Base
D. Neutral

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