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NAT II Physical Science Physics MCQs With Answers
Question # 1
With the propagation of a longitudinal wave through a material medium, the quantities transmitted in the propagation direction are
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Energy, momentum and mass
Energy
Energy and mass
Energy and linear momentum
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Question # 2
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 # 3
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 # 4
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 # 5
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 # 6
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 # 7
A person standing near the track of a fast moving train has tendency to fall towards it because of
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Vibration due to motion of train
Gravitation force of attraction between person and trains
The high speed of train
Some other effect
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Question # 8
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 # 9
Velocity of sound in a diatomic as is 300 m/sec, what is its rms velocity?
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400 m/sec
40 m/sec
430 m/sec
300 m/sec
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Question # 10
To increase the magnification of a telescope
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The objective lens should be of large focal length and eyepiece should be of short focal length
The objective and eyepiece both should be of large focal lengths
Both the objective and eyepiece should be of smaller lengths
The objective should be small focal length and eyepiece should be of large focal length
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Question # 11
In a Millikan's oil drop experiment the charge on an oil drop is calculated to be 6.35 x 10
-19
C. The number of excess electrons on the drop is
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3.9
4
4.2
6
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Question # 12
Ball pen function on the principle of
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Viscosity
Boyle's law
Gravitational force
Surface tension
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Question # 13
The nucleus 6C12 absorbs an energetic neutron and emits a beta particle (
β). The resulting nucleus is
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7
N
14
5
B
13
7
N
13
6
C
13
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Question # 14
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 # 15
How does the Young's modulus vary with the increase of temperature?
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Decrease
Increases
Remains constant
First increases and then decreases
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Question # 16
The volt/metre is the unit of:
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Potential
Work
Force
Electric field intensity
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