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Two light balls are suspended as shown i...

Two light balls are suspended as shown in figure. When a stream of air passes through the space between them, the distance between the balls will

A

remain same

B

increase

C

may increase or decrease, depending on speed of air

D

decrease

Text Solution

Verified by Experts

The correct Answer is:
D
When a stream of air passes through the space between the balls, the pressure reduce between them as compared to the atmospheric pressure on either side. So, according to Bernoulli's theorem, the pressure energy should be constant and is compensated by movement of balls toward each other. So, the distance between the balls will decrease.
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