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NAT II Physical Science Physics MCQs With Answers
Question # 1
For obtaining appreciable extension, the wire should be
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Short and thin
Long and thin
Short and thick
Long and thick
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Question # 2
A bullet is shot from a rifle. As a result the rifle recoils. The kinetic energy of rifle as compared to that of bullet is
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Less
Greater
Equal
Cannot be concluded
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Question # 3
When the length of a microscope tube increase, its magnifying power
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Decreases
Increases
Does not Change
May increase or decrease depending on the observer and the place of observation
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Question # 4
A planet is observed by an astronomical refracting telescope having an objective of focal length 16 m and an eyepiece of focal length 2 cm.
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The distance between the objective and the eyepiece is 8 m
The angular magnification of the planet is 200
The image of the planet is inverted
The objective is smaller than the eyepiece
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Question # 5
If a diamagnetic substance is brought near north or south pole of a bar magnet it is
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Attracted by the poles
Repelled by the poles
Repelled by north pole and attracted by the south pole
Attracted by the north pole and repelled by the south pole
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Question # 6
The incorrect statement regarding the lines of force of the magnetic field B is
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Magnetic intensity is a measure of lines of force passing through unit area held normal to it
Magnetic lines of force form a close curve
Inside a magnet, its magnetic lines of force move from north pole of a magnet towards its south pole
Due to a magnet magnetic lines of force never cut each other
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Question # 7
The velocity of falling raindrops attains limited value because of
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Up thrust of air
Viscous force exerted by air
Surface tension effect
Air currents atmosphere
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Question # 8
Which of the modulus of elasticity is involved in compression a rod to decrease its length?
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Young's modulus
Bulk modulus
Modulus of rigidity
None of the above
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Question # 9
The dimensional formula of torque is:
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[ML
2
T
-2
]
{MLT
-2
]
[ML
-1
T
-2
]
[ML
-2
T
-2
]
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Question # 10
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 # 11
A 2 kg body and a 3 kg body have equal momentum. If the kinetic energy of 3 kg body is 10 J, the KE of 2 kg body will be
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6.66 J
15 J
22.5 J
45 J
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Question # 12
In a voltmeter the conduction takes place due to
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Electrons only
Holes only
Electrons and holes
Electrons and ions
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Question # 13
Planck's constant has the dimensions of:
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Energy
Momentum
Frequency
Angular momentum
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Question # 14
To explain his theory Bohr used
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Conservation of linear momentum
Conservation of angular momentum
Conservation of quantum frequency
Conservation of energy
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Question # 15
The mass of a proton is 1847 times that of an electron. An electron and a proton are projected into a uniform electric field in a direction at right angles to the direction of the field with the same initial kinetic energy.The
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Both the trajectories will be equally curved
The proton trajectory will be less curved than the electron trajectory
The electron trajectory will be less curved than the proton trajectory
The relative curving of the trajectories will be dependent on the value of the initial kinetic energy
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