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NAT I Engineering 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
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 # 3
A prism splits a beam of white light into its seven constituent colors this is so because
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Phase of different colors is different
Amplitude of different colors is different
Energy of different colors is different
Velocity of different colors is different
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Question # 4
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 # 5
Center of mass is a point
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Which is geometric center of a body
From which distance of particles are same
Where the whole mass of the body is supposed to be centered
Which is the origin of reference frame
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Question # 6
The twinkling of stars is due to
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The fact that stars do not emit light continuously
The refractive index of the earth's atmosphere fluctuate
Intermittent absorption of star light by its own atmosphere
None of them
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Question # 7
The henry is the unit for
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Resistance
Magnetic flux
Magnetic field
Inductance
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Question # 8
What remains constant when the earth revolves around the sun?
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Angular momentum
Linear momentum
Angular kinetic energy
Linear kinetic energy
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Question # 9
Which quantity is increased in step-down transformer?
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Current
Voltage
Power
Frequency
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Question # 10
Huygen's wave theory of light cannot explain
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Diffraction
Interference
Polarization
Photoelectric effect
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Question # 11
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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