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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Physics ICS Part 2 Chapter 18 Online MCQ's Test

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Question # 1

The average gap for Germanium at 0K is

Question # 2

Output resistance of an op amp is

Question # 3

Photo diode is used for detection of.

Question # 4

The output of two input is zero only when its.

Question # 5

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

Question # 6

The symbol of p-n-p transistor is

Question # 7

The potential difference across depletion region in case of Si is

Question # 8

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

Question # 9

An expression for gain of an inverting amplifier is

Question # 10

The impurity in the germinium is usually in the ratio of

Question # 11

Base of transistor is of order:

Question # 12

_______ is the building block of every electronic circuit.

Question # 13

the number of terminals in a semiconductor diode are

Question # 14

Photodiode is used for:

Question # 15

The colour of light emitted by a LED depends on.

Question # 16

Which device is used as a rectifier?

Question # 17

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

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ICS 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 The device which are required to convert various physical quantities into electric voltage are called.
A. Filters
B. Rectifiers
C. Amplifiers
D. Sensors
2 The gate, which changes the logic level to its opposite level is called
A. NOR gate
B. AND gate
C. OR gate
D. NOT gate
3 For rectification we use.
A. Transformer
B. Diode
C. Choke
D. Generator
4 the number of terminals in a semiconductor diode are
A. 2
B. 3
C. 4
D. 5
5 In a certain circuit, IB = 40 µA, IC = 20 mA
A. 450 amp
B. 0.45 amp
C. 5 m amp
D. 500 amp
6 A light emitting diode emits light only when
A. Reverse biased
B. Forward biased
C. Unbiased
D. None of these
7 The resistance between the inverting (-) and non inverting inputs is called Input resistance and is the order of.
A. Ohms
B. Kilo Ohms
C. Mega Ohms
D. Thounds Ohms
8 The semi conductor diode has the property of
A. Two way conduction
B. Zero conduction
C. One way conduction
D. Amplification
9 Transistors are made from
A. Plastics
B. Metals
C. Insulator
D. Doped semi conductors
10 For normal transistor the emitter current can be given by
A. IE = IC
B. IE = IC + IB
C. IE = IB
D. None of these

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