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

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

Question # 2

Rectification is the process of converting.

Question # 3

The semi conductor diode has the property of

Question # 4

In a transistor, collector current is controlled by:

Question # 5

The open loop gain of the amplifier is order of.

Question # 6

Which device is used as a rectifier?

Question # 7

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

Question # 8

X=A+B is the mathematical notation for.

Question # 9

The gate, which changes the logic level to its opposite level is called

Question # 10

The potential difference across the depletion region of germanium is.

Question # 11

A transistor has:

Question # 12

A light emitting diode emits light only when

Question # 13

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

Question # 14

The P.D develop in case of germanium is:

Question # 15

Reverse current flows due to

Question # 16

The term invertor is used for.

Question # 17

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

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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 Transistors are made from
A. Plastics
B. Metals
C. Insulator
D. Doped semi conductors
2 The reverse saturation current in a PN junction diode is only due to:
A. Majority carriers
B. Minoritycarriers
C. Acceptor ions
D. Donor ions
3 Which factor does not affect the conductivity of PN-Junction diode.
A. Doping
B. Temperature
C. Voltage
D. Pressure
4 Conversion of A.C into D.C is called:
A. Compton effect
B. Rectification
C. Amplification 
D. Pair production
5 Photo diode is used for detection of.
A. Heat
B. Magnet
C. Current
D. Light
6 The semi conductor diode has the property of
A. Two way conduction
B. Zero conduction
C. One way conduction
D. Amplification
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 The impurity in the germinium is usually in the ratio of
A. 1:106
B. 1:104
C. 1:108
D. 1:1010
9 The P.D develop in case of germanium is:
A. 0.3
B. 0.7
C. 0.5
D. 0.9
10 Base of transistor is of order:
A. 10-11m
B. 106m
C. 10-8m
D. 10-6m

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