Advertisements
Advertisements
प्रश्न
Give a scientific reason.
We can hear the movement of a mosquito’s wings but we cannot hear the movement of our hands.
Advertisements
उत्तर
The frequency of the sound produced by the movement of a mosquito’s wings lies within the human audible range (20 Hz to 20,000 Hz), whereas the sound produced by the movement of our hands has a frequency below 20 Hz, which is inaudible to humans. Therefore, we can hear the movement of a mosquito's wings but not that of our hands.
संबंधित प्रश्न
State one important property of waves used for echo depth sounding.
The pitch of a flute is decreased by ................... length of air column.
When sound travels in form of a wave
Explain the mechanism of the formation of a longitudinal wave when the source vibrates in the air.
Two waves of the same pitch have amplitudes in the ratio 1:3. What will be the ratio of frequencies?
How does the wave pattern of a loud note differ from a soft note? Draw a diagram.
The frequencies of notes given by flute, guitar and trumpet are respectively 400 Hz, 200 Hz and 500 Hz. Which one of these has the highest pitch?
When a gun is fired at a distance, why is it that the flash is seen almost instantaneously while the sound is heard a little later?
______ is a general term for the distinguishable characteristic of a wave.
What is acoustics?
