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NAT II Physical Science Physics MCQs With Answers
Question # 1
An ideal choked (used along with fluorescent tube) would be
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A pure resistor
A pure capacitor
A pure inductor
A combination of an inductor and a capacitor
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Question # 2
With the increase of temperature viscosity
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Increase
Decrease
Remains same
Doubles
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Question # 3
What remains constant in the field of central force?
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Potential energy
Kinetic energy
Angular momentum
Linear momentum
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Question # 4
There are discrete energy levels in atoms. It was first experimentally demonstrated by
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Rutherford's experiment
Franck Hertz experiment
Marsden's experiment
Somerfield experiment
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Question # 5
The mass defect for the nucleus of helium is 0.0303 a.m.u. What is the binding energy per nucleon for helium in MeV?
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28
7
4
1
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Question # 6
All of the following statements are correct except
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The total focal length of astronomical telescope is the sum of the focal lengths of its two lenses
The image formed by the astronomical telescope is always erect because the effect of the combination of the two lenses is divergent
The magnification of an astronomical telescope can increases by decreasing the focal length of the eyepiece
The magnifying power of the refracting type of astronomical telescope is the ratio of the focal length of the objective to that of the eye piece
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Question # 7
A charge Q is divided into two parts q and Q - q and separated by a distance R. The force of repulsion between them will be maximum when:
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q = Q/4
q = Q/2
q = Q
None of these
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Question # 8
Band spectrum is produced by
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H
He
H
2
Na
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Question # 9
A cable that can support a load W is cut into two equal parts. The maximum load that can be supported by either part is:
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W/4
W/2
W
2W
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Question # 10
A sun rise or sun set, the sun looks reddish because:
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The sun is coldest at these times
Of the effects of reflection and refraction
The sun is hottest at these times
Of the scattering of light
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Question # 11
In a simple harmonic motion (SHM), which of the following does not hold?
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To force on the particle is maximum at the ends
The acceleration in 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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Question # 12
The angle between rectangular components of a vector is
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0
°
60
°
90
°
120
°
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Question # 13
Which of the following lists of physical quantities consists only of vectors:
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Time, temperature, velocity
Force, volume, momentum
Velocity, acceleration, mass
Force, acceleration, velocity
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Question # 14
A pendulum clock set to give correct time in Karachi is taken to Quetta. It would give correct time if
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The mass of the pendulum is increased
The mass of the pendulum is decreased
The length of the pendulum is increased
The length of the pendulum is decreased
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Question # 15
What is the average energy of N molecules of monoatomic gas?
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1/2 NKT
NKT
3/2 NKT
5/2 NKT
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Question # 16
A body moves a distance of 10 m along a straight line under the action of a force of 5 Newton's. If the work done is 25 joules, the angle which the force takes with the direction of motion of the body is:
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0
°
30
°
60
°
90
°
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