Advertisements
Advertisements
Question
Why are the waves mentioned by you not audible to us?
Solution
The range of audible sound waves is 20 Hz to 20,000 Hz, whereas ultrasonic waves have a frequency of more than 20,000 Hz. Hence, ultrasonic waves are not audible to humans.
APPEARS IN
RELATED QUESTIONS
Which wave property determines (a) loudness, (b) pitch?
On what factor does the loudness of a sound depend ?
When we change a feeble sound to a loud sound, we increase its :
Before playing the orchestra in a musical concert, a sitarist tries to adjust the tension and pluck the strings suitably. By doing so he is adjusting :
How does the frequency of sound given by a stretched string depend on its
- length,
- tension?
A continuous disturbance is created on the surface of water in a ripple tank with a small piece of cork floating on it. Describe the motion of the cork. What does the motion of the cork tell about the disturbance?
Can you hear the sound produced due to the vibrations of second's pendulum?
Match the following.
| 1. | Tuning fork | The point where density of air is maximum |
| 2. | Sound | Maximum displacement from the equilibrium position. |
| 3. | Compressions | The sound whose frequency is greater than 20,000 Hz. |
| 4. | Amplitude | Longitudinal wave. |
| 5. | Ultasonics | Production of sound. |
Describe with diagram, how compressions and rarefactions are produced.
