Question

In the given figure, two balloons are suspended freely by two light threads. Initially, they are at a distance of 10 cm. When we blow air in the space between the two balloons, the distance between them will be:

• A. Equal to 10 cm.
• B. More than 10 cm.
• C. Less than 10 cm.
• D. Equal to 20 cm.

Answer 1

The correct option is C

Less than 10 cm.

When we blow air in the space between the two balloons, the pressure in between the balloons decreases as compared to the pressure of the air present on either side of the balloons. This pressure difference creates a force that pushes the balloons toward each other. So the distance between them will be less than 10 cm.