In the bell jar experiment, as air is removed from the jar: 
a)intensity of sound falls
b) speed of sound falls
c)intensity of sound increases
d)speed of sound increases

EXPERTS PLEASE ANSWER THIS QUESTION.....

Dear student,
As the air is pumped out of the sealed bell jar, the sound from the bell jar fades it means that the intensity of sound decrease.
option (a) is correct


Regards

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C.Intensity of sound decreases
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B.
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