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  • A soap bubble is blown with the help of a mechanical pump at the mouth of a tube. The pump produces a constant increase per minute in the radius of the bubble, irrespective of its internal pressure

A soap bubble is blown with the help of a mechanical pump at the mouth of a tube. The pump produces a constant increase per minute in the radius of the bubble, irrespective of its internal pressure. The graph between the excess pressure inside the soap bubble and time t will be:

Option: 1


Option: 2


Option: 3


Option: 4


Answers (1)

best_answer

Use

\Delta P = \frac{4T}{r}

\therefore \Delta P\alpha \frac{1}{r}

As the radius of the soap bubble increases, pressure decreases.

Posted by

Rishi

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