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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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

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

Question # 2

A.C. can be converted into D.C. by

Question # 3

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

Question # 4

For automatic Switching of streetlight, the op amplifier is used as.

Question # 5

Depletion region carries.

Question # 6

For rectification we use.

Question # 7

The mathematical symbol for NOR operation is

Question # 8

the number of terminals in a semiconductor diode are

Question # 9

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

Question # 10

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

Question # 11

In photovoltaic cell, current is directly proportional to.

Question # 12

The average gap for Germanium at 0K is

Question # 13

The p-n junction in which p side is connected to+ive and n-side is -ve the junction is said to be:

Question # 14

Transistors are made from

Question # 15

Which component of the transistor has greater contrition of impurity.

Question # 16

A diode characteristics curve is a plot between

Question # 17

The impurity in the germinium is usually in the ratio of

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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 Output resistance of an op amp is
A. High
B. Low
C. Zero
D. Equal to input resistance
3 For normal transistor the emitter current can be given by
A. IE = IC
B. IE = IC + IB
C. IE = IB
D. None of these
4 Automatic function of street light can be done by the use of.
A. Inductor
B. Rectifier
C. Comparator
D. emf
5 Minimum number of semi conductor diodes required for full wave rectification are.
A. 1
B. 2
C. 3
D. 4
6 The ratio Beta in transistor is called.
A. Voltage gain
B. Emitter gain
C. Current gain
D. Nuclear gain
7 When transistor are used in digital circuits they usually operate in the :
A. Active region
B. Break down region
C. Saturation & cutoff regions
D. Linear region
8 Base of transistor is of order:
A. 10-11m
B. 106m
C. 10-8m
D. 10-6m
9 Pulsating output of full wave rectifier can be made smooth by using circuit called.
A. Filter
B. Amplifier
C. Resistor
D. Transistor
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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