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Physics Practice Questions Set 2
For India's Top Government Exams
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Earthquake (shock) waves are
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1 point
infrasonic waves
ultrasonic waves
seismic
infrared waves
A laser is a device to produce ___
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a beam of white light
coherent light
microwaves
X-rays
If a small raindrop falls through air
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its velocity goes on increasing
its velocity goes on decreasing
its velocity goes on increasing for some time and then becomes constant
it falls with constant speed for some time and then its velocity increases
The phenomenon of mirage occurs due to which one of the following?
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Polarisation of light
Dispersion of light
Diffraction of light
Total internal reflection of light
Consider the following statements
X-rays
1. can pass through aluminum.
2. can be deflected by the magnetic field.
3. move with a velocity less than the velocity of ultraviolet rays In a vacuum.
Which of the statements given above is/are correct?
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1, 2 and 3
Only 1
2 and 3
1 and 2
A perfect black body has the un
i
que characteristic feature as
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A perfect black body has the unique characteristic feature as
a good radiator only
a good absorber and a good radiator
neither a radiator nor an absorber
By which one of the following, an old written material which cannot be read easily, can be read
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γ-rays
X-rays
IR-rays
Radiofrequency waves
Which one of the following is the permissible level of noise in a silent zone in the daytime?
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50 dB
60 dB
65 dB
75 dB
Television signal cannot be received generally beyond a particular distance due to
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the curvature of the Earth
weakness of antenna
weakness of signal
absorption of signal in the air
Which one of the following common devices works on the basis of the principle of mutual induction?
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1 point
Tubelight
Transformer
Photodiode
LED
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