The example of a stringed instrument is
tabla
flute
mouthorgan
violin
When a body vibrates with its natural frequency, the force acting on the body is
a constant force
proportional to its displacement
zero
proportional to its velocity
The frequency of ultrasonic vibrations is
more than 20000 Hz
between 20 and 10000 Hz
between 20 and 20000 Hz
less than 20 Hz
A sound wave travels at a speed of 330 m/s. If its wavelength is 1.5 cm, calculate the frequency of the sound wave.
22 kHz
30 kHz
10 kHz
35 kHz
Audible frequency range is
20 Hz to 2 kHz
20 Hz to 200 Hz
20 Hz to 20 kHz
20 Hz to 200 kHz
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
The SI unit of frequency is
second
meter
hertz
meter per second
Sonar makes use of the
infrasonic sound
ultrasound
ordinary sound
light
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
Which of the following is carried by the waves from one place to another?
mass
velocity
wavelength
energy