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

A two inputs NAND gat with inputs a and b has an output '0' if.

Question # 2

A PN junction can not be sued a.

Question # 3

During negative half cycle of A.c then p-n junction offers.

Question # 4

The sensor of light is.

Question # 5

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

Question # 6

The potential difference across the depletion region of germanium is.

Question # 7

The potential difference across depletion region in case of Si is

Question # 8

NAND gate represented by:

Question # 9

The potential barrier for silicon is.

Question # 10

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

Question # 11

The symbol of p-n-p transistor is

Question # 12

Logic gate can control some physical parameters like.

Question # 13

Output resistance of an op amp is

Question # 14

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

Question # 15

Which device is used as a rectifier?

Question # 16

Greater concentration of impurity is added in.

Question # 17

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

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ICS Part 2 Physics Chapter 18 Online Test MCQ's

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Sr.# Question Answer
1 The colour of light emitted by a LED depends on.
A. It forward biased
B. Its reverse biased
C. Unbiased
D. None of these
2 Greater concentration of impurity is added in.
A. Base
B. Emitter
C. Collector
D. LED
3 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
4 Minimum number of semi conductor diodes required for full wave rectification are.
A. 1
B. 2
C. 3
D. 4
5 The mathematical symbol for NOR operation is
A. Choice 1
B. X = A . B
C. X = A + D
D. Choice 4
6 The output from a full wave rectifier is
A. An ac voltage
B. A dc voltage
C. Zero
D. A pulsating unidirectional voltage
7 A device which converts low voltage or current to high voltage or current is called.
A. Transformer
B. AC generator
C. Amplifier
D. Rectifier
8 A PN junction can not be sued a.
A. Rectifier
B. Amplifier
C. Detector
D. LED
9 X=A+B is the mathematical notation for.
A. OR gate
B. NOR gate
C. NAND gate
D. AND gate
10 In a transistor, collector current is controlled by:
A. Collector voltage
B. Base current
C. Collector resistance
D. All of the above
11 For rectification we use.
A. Transformer
B. Diode
C. Choke
D. Generator
12 Transistor was discovered by
A. Young
B. Curie
C. John Bardeen
D. Shale's
13 _______ is the building block of every electronic circuit.
A. Semi conductor diode
B. Resistor
C. Capacitor
D. Amplifier
14 The gain of transistor amplifier depends upon
A. Resistance connected with collector
B. Resistance connected with base voltage
C. Input voltage
D. Output voltage
15 The central region of a transistor is called.
A. Emitter
B. Collector
C. Base
D. Neutral
16 A transistor has parts:
A. 2
B. 3
C. 4
D. 5
17 Base of transistor is of order:
A. 10-11m
B. 106m
C. 10-8m
D. 10-6m

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