If a soap bubble expands, the pressure inside the bubble

If a soap bubble expands, the pressure inside the bubble
  1. increases
  2. remains the same
  3. is equal to the atmospheric pressure
  4. decreases

Solution


A soap bubble has two liquid surfaces in contact with air, one inside the bubble and the other outside the bubble.

For pressure, we can write:

Pi=Po+4Tr, so as r increases, pressure inside the bubble decreases.

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Asked in: NEET 2022 (Phase 1)

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