The speed of a wave in a medium is 760 m/s.If 3600 waves are passing through a point in the medium in 21 min, then their wavelength is
13.8 m
25.3 m
41.5 m
57.2 m
Jaltarang is a
stringed instrument
wind instrument
percussion instrument
mixed instrument
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
Sound waves travel with a speed of 346 m/s in air. What is the wavelength of sound whose frequency is 692 Hz?
0.5 m
5 m
0.05 m
50 m
The properties of ultrasound that make it useful are :
high power and high speed
high power and good directivity
high frequency and high speed
high frequency and bending around the objects
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
A noise level of 100 decibel would correspond to :
just audible sound
ordinary conversation
sound from a noisy street
noise from a machine shop
The example of a stringed instrument is
tabla
flute
mouthorgan
violin
Hz is the unit of
wavelength
frequency
time period
amplitude
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
