Advertisements
Advertisements
प्रश्न
What is the sound level for noise pollution?
एका वाक्यात उत्तर
Advertisements
उत्तर
The sound level above 120 dB causes noise pollution.
shaalaa.com
या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
APPEARS IN
संबंधित प्रश्न
Which of the following frequency of sound can be generated by a vibrating simple pendulum as well as by the vibrating vocal cords of a rhinoceros ?
What do you understand by amplitude of an oscillation?
What do you mean by sound ranging?
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)?
What do you mean by the audible range of frequency?
State the relation between the wavelength and the frequency.
What kinds of waves are produced in solids, liquids, and gases?
What do you mean by an echo?
Describe with diagram, how compressions and rarefactions are produced.
Mention two cases in which there is no Doppler effect in sound?



