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

Automatic function of street light can be done by the use of.

Question # 2

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

Question # 3

Rectification is the process of converting.

Question # 4

A transistor has:

Question # 5

The sensor of light is.

Question # 6

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

Question # 7

OR gate is represented by:

Question # 8

The resistance between the inverting (-) and non inverting inputs is called Input resistance and is the order of.

Question # 9

The P.D develop in case of germanium is:

Question # 10

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

Question # 11

Photo diode is used for detection of.

Question # 12

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

Question # 13

Transistor was discovered by

Question # 14

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

Question # 15

Greater concentration of impurity is added in.

Question # 16

The potential barrier for silicon is.

Question # 17

A diode characteristics curve is a plot between

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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 Doping is made comparatively larger in
A. Emitter
B. Base
C. Collector
D. P -type semi conductor
2 Photo diode is used for detection of.
A. Heat
B. Magnet
C. Current
D. Light
3 X=A+B is the mathematical notation for.
A. OR gate
B. NOR gate
C. NAND gate
D. AND gate
4 Reverse current flows due to
A. Majority charge carriers
B. Minority charge carriers
C. Electrons
D. Holes
5 _______ is the building block of every electronic circuit.
A. Semi conductor diode
B. Resistor
C. Capacitor
D. Amplifier
6 For rectification we use.
A. Transformer
B. Diode
C. Choke
D. Generator
7 The impurity in the germinium is usually in the ratio of
A. 1:106
B. 1:104
C. 1:108
D. 1:1010
8 The circuit of full wave rectification consist of
A. Three diodes
B. Four diodes
C. Two diodes
D. One diode
9 A light emitting diode emits light only when
A. Reverse biased
B. Forward biased
C. Unbiased
D. None of these
10 Which diode works at reverse biasing.
A. LED
B. Photo voltaic cell
C. Photo diode
D. Silicon diode

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