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A soap bubble,blown by a mechanical pump...

A soap bubble,blown by a mechanical pump at the mouth of a tube, increases in volume, with the time, at a constant rate. The graph that correctly depicts the time dependence of pressure inside the bubble is given by :

A

B

C

D

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Verified by Experts

The correct Answer is:
A
`Deltap=(4T)/(r ) implies Deltap prop (1)/(r )`
As radius of soap bubble increases with time.
`therefore " " Delta p prop(1)/(t)`
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