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Online Tests
Physics Fsc Part 2 Online Test MCQs With Answers
Question # 1
In the Bohr's model of the hydrogen atom, the lowest orbit corresponds to:
Choose an answer
Infinite energy
Maximum energy
Minimum energy
Zero energy
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Question # 2
The number of Neutron is
238
U
92
is
Choose an answer
92
238
146
330
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Question # 3
Iodine -131 is used for the treatment by
Choose an answer
Bones
Eyes
thyroid glands
Lungs
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Question # 4
When a very high energy modeules such as y radiation interact with matter, the phenomenon arising will be.
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Photoelectric effect
Compton effect
Pair production
Annihilation of matter
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Question # 5
Nuclear fission was discovered by:
Choose an answer
Otto Hahn
Friz strassmann
Both a and b
Michaelson
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Question # 6
Electro magnetic waves emitted from radio antenna are.
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Stationary
Longitudinal
Transvers
Both a and b
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Question # 7
A Current flowing towards the reader is denoted by.
Choose an answer
Cross
a bracket
A dot
Positive sign
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Question # 8
Laser can be made by creating.
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Meta stable
Population inversion
Excited state
All of these
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Question # 9
A charge Q is divided into tweo parts q and Q-q and seperated by a distance R. The force of equilibrium between them will be maximum when:
Choose an answer
q=Q/4
q=Q/2
q=Q
None of these
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Question # 10
The output from a full wave rectifier is
Choose an answer
An ac voltage
A dc voltage
Zero
A pulsating unidirectional voltage
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Question # 11
The free electrons experience force.
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In direction of -E
In direction of E
Both A and B
All of the above
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Question # 12
Helium-Neon laser discharge tube contains neon
Choose an answer
82%
15%
25%
85%
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Question # 13
The energy of photon is givne by
Choose an answer
mv2/2
hf
Va e
mac
1
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Question # 14
In modulation, low frequency signal is known as
Choose an answer
Carrier wave
fluctuated signal
Modulated carrier signal
Modulation signal
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Question # 15
Which of the following is similar to electron.
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Beta particle
Alpha particle
Neutron
Proton
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Question # 16
A block body is an ideal:
Choose an answer
Absorber
Radiator
Both a & b
None of above
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Question # 17
A current carrying conductor experience maximum magnetic force in a uniform magnetic field when it is placed.
Choose an answer
Perpendicular to field
Parallel to field
At an angle of 60
o
to the field
None of these
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Question # 18
At high frequency, the current through a capacitor is
Choose an answer
Small
Infinity
Zero
Large
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