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Excess pressure

The pressure of air inside a soap bubble of diameter 0.7 cm is

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The pressure of air inside a soap bubble of diameter $0.7 c m$ is $8 mm$ of water above atmospheric pressure, the surface tension of soap solution is :

Name: Video solution 1: The pressure of air inside a soap bubble of diameter 0.7cm is 8mm of water above atmospheric pressure, the surface tension of soap solution is :
Uploaded: 2023-03-28T08:12:12.000Z
Duration: 10 min
Description: Video solution 1: The pressure of air inside a soap bubble of diameter 0.7cm is 8mm of water above atmospheric pressure, the surface tension of soap solution is :

9.8 \times 1 0^{- 1} N / m

6.86 \times 1 0^{- 2} N / m

7.2 \times 1 0^{- 2} N / m

1.37 \times 1 0^{- 1} N / m

Views: 6,147 students

Updated on: Mar 28, 2023

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The pressure of air inside a soap bubble of diameter

0.7 c m

8 mm

of water above atmospheric pressure, the surface tension of soap solution is :

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Text solutionVerified

Excess pressure inside a soap bubble is given by-

Δ P = \frac{4 T}{r} ⟹ ρ g h = \frac{4 T}{r} ⟹ 1 0^{3} \times 9.8 \times 0.008 = \frac{4 T}{0.0035} ⟹ T = 6.86 \times 1 0^{- 2} N / m

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Question Text	The pressure of air inside a soap bubble of diameter $0.7 c m$ is $8 mm$ of water above atmospheric pressure, the surface tension of soap solution is :
Updated On	Mar 28, 2023
Topic	Mechanical Properties of Fluids
Subject	Physics
Class	Class 11
Answer Type	Text solution:1 Video solution: 1
Upvotes	136
Avg. Video Duration	10 min

The pressure of air inside a soap bubble of diameter $0.7 c m$ is $8 mm$ of water above atmospheric pressure, the surface tension of soap solution is :

Text solutionVerified

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