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Online Tests
Physics Fsc Part 2 Online Test MCQs With Answers
Question # 1
Two oppositely charged balls A and B attract the third ball C, when placed near them turn by turn The third ball C must be.
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Positively charged
Negatively charged
Electrically neutral
Positively and negatively charged
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Question # 2
The induction can be increased by winding the wire around a core made of.
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Copper
Silicon
Iron
Aluminum
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Question # 3
Potassium Cathodes in photocell emit electrons for a light.
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Visible
Infra red
Ultra violet
X rays
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Question # 4
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 # 5
100 micro F capacitor is connects to an AC voltage 24 V and frequency 50 Hz. The reactance of the capacitor is.
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30.8 Ohm
31.8 Ohm
34.8 Ohm
40 Ohm
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Question # 6
Application of wave like nature of particle is
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Photodiode
Optical microscope
Electron microscope
Compound microscope
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Question # 7
If the coil is wound on iron core, the flux through it.
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Decreases
Becomes zero
Increases
Remains constant
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Question # 8
Charge carriers in electrolytes are.
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Protons
Electrons
Holes
Positive and Negative ions
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Question # 9
By modern system of NAVSTAR, the speed any where on the earth can be determined to accuracy about.
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20 ms-1
10 ms-1
2 cms-1
2 ms-1
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Question # 10
When meta I is heated sufficiently electrons are given off by the metal. This phenomenon is known as.
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Photoelectric effect
Piezo electric effect
Thermionic emission
Secondary emission
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Question # 11
In frequency modulation, the amplitude of carrier waves is
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Increases
Remains constant
Decreases
None of these
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Question # 12
At 0 K a piece of silicon is a
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Conductor
Semi-conductor
Insulator
All
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Question # 13
The early Greeks believed that matter waves was
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Discrete
Continuous
Both continuous and discrete
All of above
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Question # 14
Pair production cannto take place in vacuum because :
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Mass in not conserved
Momentum is not conserved
Energy is not conserved
Charge is not conserved
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Question # 15
Bottom quark carries charge :
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2/3 e
-2/3 e
+1/3 e
-1 /3 e
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Question # 16
A force of 0.01 N is exerted on a charge 1.2 x 10
-5
C at a certain point. The electric field at that point is
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1.2 x 10
4
N/C
1.2 x 10
4
C/N
8.3 x 10
2
N/C
8.3 x 10
-2
N/C
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Question # 17
The unit of Plank's constant 'h' is.
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JC
J/C
JS
J/S
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Question # 18
A current generator device converts:
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Mechanical energy into chemical energy
Chemical energy into electrical energy
Mechanical energy into electrical energy
Both b and c
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