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Question
When a drum is beaten, a sound is heard due to ___.
Options:
A .  heating of the membrane
B .  vibration of the membrane
C .  both heating and vibration of the membrane
D .  freezing of the membrane
Answer: Option B
:
B
When a drum is beaten, the membrane of the drum vibrates which can be felt by touching it and the sound is heard. As the membrane stops vibrating, no sound is heard. The vibrating drum produces sound.

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