Saved Bookmarks
| 1. |
Give scientific reason:We can hear the movement of a mosquito wings but we cannot hear the movement of our hands. |
|
Answer» 1. Humans cannot hear frequency less than 20 Hz. In the movement of hands oscillations does take place but is less than frequency that humans can hear. 2. Mosquitos wings flap in air. 3. When they fly in air it produces buzzing sound in our ears. 4. The movement of mosquito wings produces sound greater than 20 Hz. 5. Sound is the reception of such waves and their perception by the brain. |
|