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A bulb of constant volume is attached to...

A bulb of constant volume is attached to a very thin manometer tube as shown in figure. Gas starts leaking through a small hole in the bulb causing change in pressure as :
`(dp)/(dt)=-kP^(2)`

When `k` is constant and `P is pressure at any instant
Initial height difference 'h' was 76 cm and after 10 mm 'h' was 38 cm.

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