The sound from a bell in an enclosed jar gradually faints away while the jar is being evacuated. Which of the following explains this observation? - SchoolNGR

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The sound from a bell in an enclosed jar gradually faints away while the jar is being ...

The sound from a bell in an enclosed jar gradually faints away while the jar is being evacuated. Which of the following explains this observation?

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A The pressue is reduced
B The sound waves are pumped out
C The waves are absorbed in the inner walls
D There is no more material medium
E The air is disturbed

Correct Answer: Option D

Explanation:

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