The pressure outside a bubble/droplet of liquid is ________________ the internal pressure?
Correct answer: B. Less than
- A. Greater than
- B. Less than
- C. Equal to
- D. Unpredictable; depends on the bubble size
Explanation
Surface tension produces an excess pressure inside a curved liquid surface, so the pressure inside a bubble or droplet is greater than the pressure outside. The pressure difference increases as the bubble or droplet becomes smaller.
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