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Surface Tension

When a soap b...

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When a soap bubble is charged excess pressure inside it (assume radius does not change) 1) Decreases 2)Increases 3)Does not Change 4)Depends on the nature of cha

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Q. If the excess pressure inside a soap bubble of radius

r_{1}

in air is equal to the excess pressure inside air bubble of radius

r_{2}

inside the soap solution, then

r_{1} : r_{2}

Q. The excess pressure across a soap bubble of radius

r

p = \frac{4 σ}{r},

σ

is the surface tension of soap solution. What is the excess pressure across an air bubble of the same radius

r

formed inside a container of soap solution?

Q. A soap bubble of radius '

r

' is formed in air. The excess pressure inside the bubble is:

Q. A soap bubble of radius

R

is surrounded by another soap bubble of radius

2 R

as shown. Taking surface tension =

S

, the pressure inside the smaller soap bubble, in excess of the atmospheric pressure will be

Q. A soap bubble of radius

R

is surrourded by another soap bubble of radius

2 R

, as shown. Take surface tension

= S

. Then, the pressure inside the smaller soap bubble, in excess of the atmosphere pressure will be:

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