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
The example of a stringed instrument is
tabla
flute
mouthorgan
violin
Sound is a form of
force
power
tendency
energy
If 15 waves are produced per second, what is the frequency?
20 Hz
30 Hz
15 Hz
1/15 Hz
The instrument used in the laboratory to produce sound of a fixed frequenncy is
simple pendulum
thermometer
meter scale
tuning fork
The speed of sound of a wave of frequency 200 Hz in air is 340 m/s. The speed of sound of wave of frequency 400 Hz in same air is
340 m/s
680 m/s
170 m/s
3 ×108m/s
The frequency of ultrasonic vibrations is
more than 20000 Hz
between 20 and 10000 Hz
between 20 and 20000 Hz
less than 20 Hz
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
loudness only
quality only
Which of the following is carried by the waves from one place to another?
mass
velocity
wavelength
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
