Place a ringing bell in a closed jar and then remove air completely from the jar through a vacuum pump, as shown below in figure (a). Can we hear the ringing sound when the switch is turned on? Give reason for your answer.

Fig. (a)

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Solution

No, we cannot hear the ringing sound.

Reason:

When air is completely removed from the jar, there is no medium for the sound to travel in. So, even if the bell rings, no sound can be heard.

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Place a ringing bell in a closed jar and then remove air completely from the jar through a vacuum pump, as shown below in figure (a). Can we hear the ringing sound when the switch is turned on? Give reason for your answer. Fig. (a)

No, we cannot hear the ringing sound. Reason: When air is completely removed from the jar, there is no medium for the sound to travel in. So, even if the bell rings, no sound can be heard.

Place a ringing bell in a closed jar and then remove air completely from the jar through a vacuum pump, as shown below in figure (a). Can we hear the ringing sound when the switch is turned on? Give reason for your answer.

Fig. (a)

No, we cannot hear the ringing sound.

Reason:

When air is completely removed from the jar, there is no medium for the sound to travel in. So, even if the bell rings, no sound can be heard.