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Forces and Pressure in Physics

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Multiple Choice

While scuba diving, a girl notices air bubbles underwater. She observes that the size of a bubble is small when it is deep underwater. But the size increases as it moves upwards. What could be the reason behind the increase in size of the bubble?

  1. More air enters into the bubbles from top
  2. Due to friction
  3. Due to gravity
  4. Due to decrease in pressure applied by water on air bubbles
  5. Due to dissolved oxygen more at the surface
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