In the bell jar experiment,as air is removed | vedclass

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(A) Sound is a mechanical wave that requires a material medium for its propagation.In the bell jar experiment,as the air is pumped out,the density of

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intensity of sound falls

Vedclass · Answer

(A) Sound is a mechanical wave that requires a material medium for its propagation.In the bell jar experiment,as the air is pumped out,the density of the medium (air) inside the jar decreases.Since sound intensity depends on the density of the medium and the amplitude of the vibrations,the reduction in air molecules leads to a decrease in the energy transmitted.Consequently,the intensity of the sound heard by the observer gradually falls until it becomes inaudible when a vacuum is created.

In the bell jar experiment,as air is removed from the jar,

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