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
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
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
One of the following can hear infrasound. This one is
dog
bat
rhinoceros
humans
If 15 waves are produced per second, what is the frequency?
20 Hz
30 Hz
15 Hz
1/15 Hz
Sound is a form of
force
power
tendency
energy
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
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
A bat can hear sound at frequency up to 120 kHz. Determine the wavelength of sound in air at this frequency. Take the speed of sound in air to be 344 m/s.
2.87 mm
2.56 mm
3.58 mm
2.42 mm
Jaltarang is a
stringed instrument
wind instrument
percussion instrument
mixed instrument
