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Online Tests
Physics Fsc Part 2 Online Test MCQs With Answers
Question # 1
100 micro F capacitor is connects to an AC voltage 24 V and frequency 50 Hz. The reactance of the capacitor is.
Choose an answer
30.8 Ohm
31.8 Ohm
34.8 Ohm
40 Ohm
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Question # 2
In Millikan's oil drop experiment a charged particle of mass 'm' is in equilibrium in an will
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Zero
g/2
g
2g
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Question # 3
An electromagnetic wave goes from air to glass which of the following does not change?
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Radio waves
X-rays
Ultra violet radiation
Ultra sond waves
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Question # 4
Marie Curie and Pierre Curie discovered.
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Uranium
Uranium and Radium
Polonium and radium
Radium
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Question # 5
The negative of the potential gradient is
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Electrostatic force
Electromotive force
Potential difference
Electric field intensity
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Question # 6
When platinum wire is heated, it changes to cherry red at temperature.
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500
o
C
900
o
C
1100
o
C
1300
o
C
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Question # 7
Which diode works at reverse biasing.
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LED
Photo voltaic cell
Photo diode
Silicon diode
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Question # 8
Kirchhoff's voltage rule is a way of stating conservation of.
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Mass
Charge
Energy
Momentum
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Question # 9
Current passing through the coil of galvanometer
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CO/BAN
CoN /BA
NAB/CO
AN/BCO
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Question # 10
Commutator was invented in
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1834
1820
1840
1835
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Question # 11
Recently superconductor discovered is at temperature.
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110K
143K
16.3K
119K
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Question # 12
A diode characteristic curve is a plot between
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Current and time
Voltage and time
Voltage and current
Forward voltage and reverse voltage
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Question # 13
The powers of two electric bulbs are 100w and 200w. Which are connected to power supply of 220 V. The ratio of resistance of their filament will be:
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1
:2
2
:1
1
:3
4
:3
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Question # 14
The most refined form of matter is:
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Smoke
Light
Ice
Fog
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Question # 15
Seven resistances are connected as shown in the figures . THe equivalent resistance between A and B is:
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3Ω
4Ω
4.5Ω
5Ω
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Question # 16
The vector sum of electric force and magnetic force is called:
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Deflecting force
Lorentz force
Newton force
Faraday's force
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Question # 17
A PN junction can not be sued a.
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Rectifier
Amplifier
Detector
LED
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Question # 18
e/m=
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v/Br
Br/V
VB/r
Vr/B
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