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NAT I Computer Science Physics MCQs With Answers
Question # 1
When sound waves travel from air to water which of these remains constant?
Choose an answer
Velocity
Frequency
Wavelength
All the above
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Question # 2
The velocity of falling raindrops attains limited value because of
Choose an answer
Up thrust of air
VIscous force exerted by air
Surface tension effect
Air currents atmosphere
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Question # 3
According to Stoke's law drag force depends on
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Initial velocity
Final velocity
Terminal velocity
Instantaneous velocity
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Question # 4
The initial velocity of a body moving along a straight line in 7 m/s. It has a uniform acceleration of 4 m/s
2
. The distance covered by the body in the 5th second of its motion is
Choose an answer
25 m
35 m
50 m
85 m
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Question # 5
As the electron in Bohr orbit of hydrogen atom passes from stat n = 2 to n = 1 the kinetic energy K and potential energy U change as
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K two-fold,U also two-fold
K four-fold,U also four-fold
K four-fold,U two-fold
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Question # 6
The nuclear model of atom was proposed by
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J.J Thomson
E.Rutherford
Neil Bohr
Summerfield
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Question # 7
The sieman is the SI unit of
Choose an answer
Resistance
Specific Resistance
Conductance
Inductance
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Question # 8
For obtaining appreciable extension the wire should be
Choose an answer
Short and thin
Long and thin
Short and tick
Long and thick
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Question # 9
Two bodies with masses M
A
and M
B
are moving with equal kinetic energy.Their linear moments are numerically in a ratio | P
A
| : |P
B
| will be:
Choose an answer
M
B
:
M
A
M
A
:
M
B
√
M
A
: √
M
B
M
A
2
:
M
B
2
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Question # 10
A wire is stretched to double of its length.The strain is
Choose an answer
2
1
Zero
0.5
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Question # 11
In a simple harmonic motion (SHM) which of the following does not hold?
Choose an answer
The force on the particle is maximum at the ends
The acceleration is minimum at the mean position
The potential energy is maximum at the mean position
The kinetic energy is maximum at the mean position.
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