Advertisements
Advertisements
Question
Define the term wave velocity. Write its S.I. unit.
Advertisements
Solution
The distance travelled by a wave in one second is called its wave velocity.
Its SI unit is metre per second (ms-1).
APPEARS IN
RELATED QUESTIONS
Select the correct alternative :
We can distinguish a shrill sound from a flat sound by its
Write the audible range of frequency for the normal human ear.
On what factor does the loudness of a sound depend ?
The sound of an explosion on the surface of a lake is heard by a boat man 100 m away and by a diver 100 m below the point of explosion.
(i) Who would hear the sound first: boatman or diver?
(ii) Give a reason for your answer in part (i).
(iii) If sound takes time t to reach the boatman, how much time approximately does it take to reach the diver?
Select the correct option:
In the region of compression or rarefaction, in a longitudinal wave, the physical quantity which does not change is:
The distance between one crest and one trough of a sea wave is 4.5 m. If the waves are produced at the rate of 240/min, calculate the wave velocity.
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. |
When a sound wave travels through air, the air particles ______.
Explain the types of mechanical waves.
