The pitch of a sound at a point depends on
the distance of the point from the source
the frequency of the sound
the amplitude of vibrations of the sound
velocity of sound in the medium
If 15 waves are produced per second, what is the frequency?
20 Hz
30 Hz
15 Hz
1/15 Hz
The ultrasound waves can penetrate into matter to a large extent because they have
very high speed
very high frequency
very high wavelength
very high amplitude
When the same note is played on a sitar and a flute, the sound produced can be distinguished from each other because of the difference in :
pitch, loudness and quality
pitch and loudness
quality only
loudness only
Sound is a form of
force
power
tendency
energy
Which kind of sound is produced in an earthquake before the main shock wave begins?
ultrasound
infrasound
audible sound
none of the above
Audible frequency range is
20 Hz to 2 kHz
20 Hz to 20 kHz
20 Hz to 200 kHz
20 Hz to 200 Hz
In a sonar, ultrasonic waves are sent into the sea water and the reflected waves from a sunken ship are received after 2.0 s. If the velocity of waves in sea water is 1450 m/s, find the depth of the sunken ship.
1250 m
1350 m
1450 m
1500 m
Hz is the unit of
wavelength
frequency
time period
amplitude
Which of the following statement best describes frequency?
the maximum disturbance caused by a wave
the number of complete vibrations per second
the distance between one crest of a wave and the next one
the distance travelled by a wave per second
