Question

Assertion :When a large soap bubble and a small soap bubble are connected by a capillary tube the large bubble expands while the small bubble shrinks. Reason: The excess pressure inside a bubble is inversely proportional to radius and air flows from small bubble to large bubble.

• A. Statement-1 is false, statement-2 is true
• B. Statement-1 is true, statement-2 is false
• C. Statement-1 is true, statement-2 is true,statement-2 is a correct explanation for statement-1
• D. Statement-1 is true, statement-2 is true,statement-2 is not a correct explanation for statement-1

Answer 1

The correct option is A Statement-1 is false, statement-2 is true

The excess pressure inside an air bubble is given by the expression,

$P=4T/R$

Therefore, the larger bubble will have lesser pressure as compared to smaller bubble. Therefore, air has a tendency to move from a higher pressure to lower pressure and hence, the larger bubble will go on expanding until it bursts or the smaller bubble exhausts.