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NAT II Physical Science Physics MCQs With Answers
Question # 1
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 # 2
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 # 3
A photoelectric cell coverts
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Electrical energy to light energy
Light energy to light energy
Light energy to electrical energy
Light energy to elastic energy
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Question # 4
Which one of the following is a simple harmonic motion?
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Wave moving through a string fixed at both ends
Earth spinning about its own axis
Ball bouncing between two rigid vertical walls
Particle moving in a circle with uniform speed
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Question # 5
Bernoulli's equation is based upon law of conservation
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Mass
Momentum
Energy
None of these
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Question # 6
A piece of fuse wire melts when a current of 15 ampere flows through it.
With this current, if it dissipates 22.5 W, the resistance of fuse wire will be
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Zero
10 ohm
1 ohm
0.10 ohm
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Question # 7
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 # 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
The fundamental unit which has same power in the dimensional formula of surface tension and viscosity is:
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Mass
Length
Time
None
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Question # 10
The product of the pressure and volume of an ideal gas is
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A constant
Approximately equal to the universal gas constant
Directly proportional to its temperature
Inversely proportional to its temperature
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Question # 11
A lens behaves as a converging lens in air and a diverging lens in water. The refractive index of the material is
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Equal to unity
Equal to 1.33
Between unity and 1.33
Greater than 1.33
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Question # 12
A train of 150 m length is going towards north direction at a speed of 10 ms
-1
. A parrot flies at a speed of 5 ms
-1
towards south direction parallel to the railway track. The time taken by the parrot to cross the train is equal to
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12 s
8 s
15 s
10 s
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Question # 13
A particle moves along a circular path under the action of a force. The work done by the force is
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Zero
Positive and non-zero
Negative and non zero
None of the above
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Question # 14
Who explained the origin of the Fraunhoffer lines?
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Fraunhoffer
Kirchhoff
Fresnel
Snell
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Question # 15
Angular momentum is
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Vector (axial)
Vector (polar)
Scalar
None of these
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Question # 16
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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