MCQMediumJEE Main 2025 · 24 January, Shift 1Surface Tension & Capillarity

Physics Question from JEE Main 2025 · 24 January, Shift 1

An air bubble of radius 0.1cm0.1 \, \text{cm} lies at a depth of 20cm20 \, \text{cm} below the free surface of a liquid of density 1000kg/m31000 \, \text{kg/m}^3. If the pressure inside the bubble is 2100N/m22100 \, \text{N/m}^2 greater than the atmospheric pressure, then the surface tension of the liquid in SI units is (use g=10m/s2g = 10 \, \text{m/s}^2).

  • A

    0.020.02

  • B

    0.10.1

  • C

    0.250.25

  • D

    0.050.05

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