2nd Year Physics Chapter 18 Online MCQ Test for 12th Class Physics Chapter 18 (Electronics)

ICS Part 2 Physics
Chapter 18 Test

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ICS Part 2 Physics Chapter Wise Test
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MCQ's Test For Chapter 0 "Physics ICS Part 2 Chapter 18 Online MCQ's Test"

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Physics ICS Part 2 Chapter 18 Online MCQ's Test

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Question # 1

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

Question # 2

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

Question # 3

The input resistance of an op amplifier is.

Question # 4

Greater concentration of impurity is added in.

Question # 5

The mathematical symbol for NOR operation is

Question # 6

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

Question # 7

One use of a single p-n junction semiconductor in an electrical circuit is a

Question # 8

The reverse saturation current in a PN junction diode is only due to:

Question # 9

Conversation of only one half of A.C. into D.C. is called.

Question # 10

The open loop gain of the amplifier is order of.

Question # 11

Output resistance of an op amp is

Question # 12

Transistor was invented by:

Question # 13

In photovoltaic cell, current is directly proportional to.

Question # 14

In case of reverse biasing, current is flown due to:

Question # 15

When a PN-Junction is reverse biased the depletion region is.

Question # 16

Most of the electrons in the base of an NPN transistor flow:

Question # 17

The symbol of p-n-p transistor is

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FSc Part II Physics Chapter 0 Important MCQ's

Sr.# Question Answer
1 Photo diode is used for detection of.
A. Heat
B. Magnet
C. Current
D. Light
2 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
3 In photovoltaic cell, current is directly proportional to.
A. Wavelength of light
B. Intensity of light
C. Energy
D. Frequency of light
4 A transistor has:
A. Two regions
B. Three regions
C. Single regions
D. Four regions
5 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.
6 In a transistor, collector current is controlled by:
A. Collector voltage
B. Base current
C. Collector resistance
D. All of the above
7 During negative half cycle of A.c then p-n junction offers.
A. High resistance
B. Low resistance
C. No resistance
D. All of these
8 A diode characteristics curve is a plot between
A. Current and resistance
B. Voltage and time
C. Voltage and current
D. Current and time
9 LDR becomes necessary when op amp is used as a
A. Night switch
B. Inverter
C. Comparator
D. Rectifier
10 The reverse saturation current in a PN junction diode is only due to:
A. Majority carriers
B. Minoritycarriers
C. Acceptor ions
D. Donor ions

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