Solved UPSC CDS/OTA Question
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Q · Fluid MechanicsMedium · 45s
The pressure inside a soap bubble is: Option: 24
TopicFluid Mechanics
Question Typemultiple choice
DifficultyMedium
Marking+1 / −0.33
Test Duration30 min
Step-by-Step Solution
The complete worked solution.
Every step explained — no skipped algebra.
Excess pressure inside a soap bubble: ΔP = 4T/r (due to two surfaces).
24
Final Answer: Option (c