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Online Tests
Physics Fsc Part 2 Chapter 3 Online Test MCQs With Answers
Question # 1
The SI unit of magnetic induction 'B' Tesla is equal to.
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NA-1m-1
Nam-1
NA-1 m
Na2m-1
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Question # 2
___ is correct relation.
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IT = 10
-4
G
IT = 10
4
G
IT = 10
2
G
IT = 10
-2
G
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Question # 3
Shunt resistance is
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Low resistance
Zero resistance
High resistance
Impedance
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Question # 4
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None of the above
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Question # 5
To convert a galvanometer into an ammeter, we connect with it a
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Shunt resistance
Low value parallel
Low value by pass resistor
All of above
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Question # 6
In current carrying long solenoid the magnetic field produced does not depend upon.
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The radius of solenoid
Number of turns per unit length
Current flowing through solenoid
All of the above
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Question # 7
CRO works by deflecting the beam of electron as they pass through
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Uniform magnetic field
Uniform electric field between two sets of parallel plates
Non-uniform magnetic field
None of these
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Question # 8
The function of three anodes a C.R.O is
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To accelerate electrons only
To focus the electrons only
To control the brightness of spot on screen
To accelerate and focus the electrons
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Question # 9
Energy stored per uint volume inside a solenoid is called as
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energy density
Electric flux
Work
Volume charge density
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Question # 10
Galvanometer is sensitive when C/BAN is
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zero
Large
small
Negative
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Question # 11
e/m=
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v/Br
Br/V
VB/r
Vr/B
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Question # 12
Brightness of screen of CRO controlled by
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Grid
Filament
Anode
Cathode
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Question # 13
If the number of turns become double but length remain same, then magnetic field in the solenoid become.
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Half
Double
Remain same
Zero
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Question # 14
The e/m of a neutron is
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Less than electron
The same as electron
Zero
Greater than election
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Question # 15
The dimensions of magnetic flux are
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M
1
L
-2
T
1
A
1
MLT
-2
A
-1
ML
2
T
2
A
-1
ML
2
T
-2
A
-1
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Question # 16
A dot represents the direction of magnetic field.
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Out of page
Into the page
Tangent to page
Parallels to page
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Question # 17
Current passing through the coil of galvanometer
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CO/BAN
CoN /BA
NAB/CO
AN/BCO
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