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NAT II Physical Science Physics MCQs With Answers
Question # 1
A conducting wire is drawn to double its length. Final resistivity of the material will be
Choose an answer
Double of the original one
Half of the original one
One-fourth of the original one
Same as original one
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Question # 2
The magnetic moment of a circular coil carrying current is
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Directly proportional to the length of the wire in the coil
Inversely proportional to the length of the wire in the coil
Directly proportional to the square of the length of the wire in the coil
Inversely proportional to the square of the length of the wire in the coil
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Question # 3
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 # 4
Band spectrum is produced by
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H
He
H
2
Na
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Question # 5
The length of a telescope is 36 cm. The focal lengths of its lenses can be
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30 cm, 6 cm
-30 cm, -6 cm
30 cm, -6cm
-30cm, 6cm
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Question # 6
The number of translation degrees of freedom for a diatomic gas is
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2
3
5
6
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Question # 7
In which case application of angular velocity is useful?
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When a body is rotating
When velocity of body is in a straight line
When velocity is in a straight line
None of these
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Question # 8
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 # 9
A wire is stretched to double of its length. The strain is
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2
1
zero
0.5
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Question # 10
What will be the ratio of the distance moved by a freely falling body from rest in 4th and 5th seconds of journey?
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4 : 5
7 : 9
16 : 25
1 : 1
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Question # 11
If the amplitude of sound is doubled and the frequency reduced to one-fourth, the intensity of sound at the same point will be
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Increasing by a factor of 2
Decreasing by a factor of 2
Decreasing by a factor of 4
Unchanged
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Question # 12
A point charge Q is placed at the mid-point of a line joining two charges, 4q and q. If the net force on charge q is zero, then Q must be equal to
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-q
+q
-2q
+4q
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Question # 13
In a simple harmonic motion the kinetic energy (KE) and the potential energy (PE), are such that throughout the motion
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KE remains constant
PE remains constant
KE/PE is constant
KE+PE remains constant
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Question # 14
When boron is added as an impurity to silicon, the resulting material is.
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n type conductor
n type semiconductor
p-type conductor
p-type semiconductor
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Question # 15
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 # 16
At constant volume temperature is increased. Then
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Collision on walls will be less
Number of collisions per unit time will increase
Collisions will be in straight lines
Collisions will not change
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