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CGP EDU Academic Team
Published on: September 12, 2026
If the excess pressure inside a soap bubble is balanced by oil column of height 2 mm, then the surface tension of soap solution will be (r = 1 cm and density d = 0.8 gm/cc)
Text Solution
Verified by ExpertsThe correct answer is:
B
$\frac{4T}{R} = \mathrm{hdg} \therefore T = \frac{\mathrm{Rhdg}}{4} \\ T = \frac{10^{-2} \times 2 \times 10^{-3} \times 0.8 \times 10^{3} \times 9.8}{4} = 3.9 \times 10^{-2} \mathrm{N/m}$
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