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PHYSICS

Physics
Infrasonic sound has a frequency lower than

20 Hz
5 Hz
15 Hz
32 Hz

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Physics
When a vibrating tuning fork is placed on a table, a loud sound is heard. This is due to :

Refraction
Damped vibrations
Reflection
Forced vibrations

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Physics
Quality of a musical note depends on

Velocity of sound in the medium
Harmonics present
Amplitude of the wave
Fundamental frequency

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Physics
If a band is played on the moon the sound will

Be heard upto 10km from it
Reverberate
Not be heard at any distance at all from it
Be heard by us faintly

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Physics
The shape of our milky way galaxy is

Spiral
None of these
Circular
Elliptical

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