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

Output resistance of an op amp is

Question # 2

The chargeless region after formation of Pn junction is called:

Question # 3

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

Question # 4

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

Question # 5

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

Question # 6

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

Question # 7

A transistor has:

Question # 8

Photo diode detects.

Question # 9

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

Question # 10

Greater concentration of impurity is added in.

Question # 11

Pulsating output of full wave rectifier can be made smooth by using circuit called.

Question # 12

For normal use:

Question # 13

The P.D develop in case of silicon is:

Question # 14

For rectification we use.

Question # 15

In a transistor, collector current is controlled by:

Question # 16

An expression for gain of an inverting amplifier is

Question # 17

_______ is the building block of every electronic circuit.

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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 In a certain circuit, IB = 40 µA, IC = 20 mA
A. 450 amp
B. 0.45 amp
C. 5 m amp
D. 500 amp
2 The input resistance of an op amplifier is.
A. Low
B. High
C. Zero
D. Equal to output resistance
3 Minimum number of semi conductor diodes required for full wave rectification are.
A. 1
B. 2
C. 3
D. 4
4 Reverse current flows due to
A. Majority charge carriers
B. Minority charge carriers
C. Electrons
D. Holes
5 The semi conductor diode has the property of
A. Two way conduction
B. Zero conduction
C. One way conduction
D. Amplification
6 Pulsating output of full wave rectifier can be made smooth by using circuit called.
A. Filter
B. Amplifier
C. Resistor
D. Transistor
7 Which diode works at reverse biasing.
A. LED
B. Photo voltaic cell
C. Photo diode
D. Silicon diode
8 The P.D develop in case of germanium is:
A. 0.3
B. 0.7
C. 0.5
D. 0.9
9 A diode characteristics curve is a plot between
A. Current and resistance
B. Voltage and time
C. Voltage and current
D. Current and time
10 The ratio of potential barriers of Ge to Si at room temperatrue is.
A. 7:3
B. 1:3
C. 2:5
D. 3:7

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