Advertisements
Advertisements
Question
Select the correct option:
In case of longitudinal waves, the particles of the medium vibrate:
Options
in the direction of wave propagation
opposite to the direction of wave propagation
at right angles to the direction of wave propagation
none of the above
Advertisements
Solution
in the direction of wave propagation
APPEARS IN
RELATED QUESTIONS
How is sound produced ?
To detect the obstacles in their path, bats produce ______.
What type of wave is represented :
(a) by density-distance graph?
(b) by displacement-distance graph?
Fig. shows three ways in which a string of length l in an instrument can vibrate.
 |
 |
 |
| (i) | (ii) | (iii) |
- Which of the diagram shows the principle note?
- Which vibration has the frequency four times that of the first?
- Which vibration is of the longest wavelength?
- What is the ratio of the frequency of the vibration in (i) and (ii)?
In fig. 2 two musical notes of the same pitch and same loudness are played on a violin and on a piano. Their wave forms are as shown in the diagram below. Explain why the wave patterns are different.
In which medium the speed of sound is more: humid air or dry air? Give a reason to your answer.
Describe briefly an experiment to prove that vibrating bodies produce sound.
Match the following.
| Ultrasonics | Frequency below 20Hz |
| Speed of sound in air | Needs material medium |
| Infrasonics | 330ms-1 |
| Sound propagation | Frequency more than 20000 Hz |
