Question

Place a ringing bell in a closed jar and then remove air completely from the jar through vaccum pump. Can we hear the ringing sound. Give the reason. [3 MARKS]

Answer 1

Each point: 1 Mark
1. No, we cannot hear the ringing sound.
2. When air is completely removed from the jar, there is no medium for the sound to travel.
3. So, even if the bell vibrates, no sound can be heard as sound has no medium to propagate.