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NAT I Medical Physics MCQs With Answers
Question # 1
If the metal bob is a simple pendulum is replaced by a wooden bob, then its time period will
Choose an answer
Increase
Decreases
Remain the same
First 'A' then 'B'
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Question # 2
A 50-volt battery is connected across 10-ohm resistor.The current is 4.5 A.The internal resistance of the battery is
Choose an answer
Zero
0.5 Ω
1.1 Ω
5.0 Ω
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Question # 3
For production of beats the two sources must have
Choose an answer
Different frequencies and same amplitude
Different frequencies
Different frequencies same amplitude and same phase
Different frequencies and same phase.
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Question # 4
When n-type of semiconductor is heated
Choose an answer
Number of electrons increases while that of holes decreases
Number of holes increases while that of electrons decreases
Number of electrons and holes remains same
Number of electrons and holes increases equally
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Question # 5
Mechanical waves on the surface of a liquid are
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Transverse
Longitudinal
Torsional
Both transverse and longitudinal
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Question # 6
When sound waves travel from air to water which of these remains constant?
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Velocity
Frequency
Wavelength
All the above
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Question # 7
What will be the ratio of the distance moved by a freely falling body from rest in 4
th
and 5
th
seconds of journey?
Choose an answer
4 : 5
7 : 9
16 : 25
1 : 1
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Question # 8
The excess (equal in number) of electrons that must be placed on each of two small spheres spaced 3 cm apart. with force of repulsion between the spheres to be 10
-19
N is
Choose an answer
25
225
625
1250
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Question # 9
A moving charge will gain energy due to the application of
Choose an answer
Electric field
Magnetic
Both of these
None of these
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