| Sound | dB | Loudness |
|---|---|---|
| Rocket at take off | 200 | Dangerously loud |
| Aircraft engine | 100–200 | Painfully loud |
| Pneumatic drill | 100 | Very loud |
| Heavy traffic | 90 | Very loud |
| Loud music | 90 | Very loud |
| Ordinary coversation | 40-60 | Moderate |
| Whisper | 20 | Faint |
| Rustling of leaves | 10 | Very faint |
Download Old Sample Papers For Class X & XII
Download Practical Solutions of Chemistry and Physics for Class 12 with Solutions