level: Level 2
Questions and Answers List
level questions: Level 2
| Question | Answer |
|---|---|
| Procedure- activity 7 | Take a bell jar and set up an electric bell inside. Connect the electric bell to a battery and a key. Connect the bell jar to a vacuum pump and seal it with wax. Ring the bell with the help of a key. Observe if you can hear the bell. Now turn on the vacuum and observe again. |
| Diagram of low pitch | lesser jagged lines |
| Diagram of high pitch | Higher jagged lines |
| Graphical representation of a sound wave | Replace pressure with density in the image. |