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

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

Question # 2

The chargeless region after formation of Pn junction is called:

Question # 3

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

Question # 4

Minimum number of semi conductor diodes required for full wave rectification are.

Question # 5

A PN junction can not be sued a.

Question # 6

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

Question # 7

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

Question # 8

In photovoltaic cell, current is directly proportional to.

Question # 9

The use of LDR is in the circuit of.

Question # 10

Truth table of logic function.

Question # 11

In case of reverse biasing, current is flown due to:

Question # 12

A photo diode can turn its current ON and OFF in

Question # 13

The colour of light emitted by a LED depends on.

Question # 14

Photodiode is used for:

Question # 15

An expression for gain of an inverting amplifier is

Question # 16

Which device is used as a rectifier?

Question # 17

Depletion region carries.

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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 The device which are required to convert various physical quantities into electric voltage are called.
A. Filters
B. Rectifiers
C. Amplifiers
D. Sensors
2 Photo diode detects.
A. Visible light
B. Radio waves
C. X rays
D. All of them
3 In case of reverse biasing, current is flown due to:
A. Minority charge carriers
B. Majority charge carriers
C. Electrons
D. Protons
4 Conversion of A.C into D.C is called:
A. Compton effect
B. Rectification
C. Amplification 
D. Pair production
5 In photovoltaic cell, current is directly proportional to.
A. Wavelength of light
B. Intensity of light
C. Energy
D. Frequency of light
6 A device which converts low voltage or current to high voltage or current is called.
A. Transformer
B. AC generator
C. Amplifier
D. Rectifier
7 Which diode works at reverse biasing.
A. LED
B. Photo voltaic cell
C. Photo diode
D. Silicon diode
8 X=A+B is the mathematical notation for.
A. OR gate
B. NOR gate
C. NAND gate
D. AND gate
9 A two inputs NAND gat with inputs a and b has an output '0' if.
A. B is zero
B. A is zero
C. Both A and B are 1
D. Both A and B are '0'
10 Photo diode is used for detection of.
A. Heat
B. Magnet
C. Current
D. Light

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