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The surface tension of soap solution is 25x10⁻3Nm⁻1. The excess pressure inside a soap bubble of diameter 1 cm is
- a)10 Pa
- b)20 Pa
- c)5 Pa
- d)None of the above
Correct answer is option 'B'. Can you explain this answer?
Most Upvoted Answer
The surface tension of soap solution is 25x10⁻3Nm⁻1. The e...
Calculation of Excess Pressure in a Soap Bubble
Given:
Surface tension of soap solution = 25x10^(-3) Nm^(-1)
Diameter of soap bubble = 1 cm = 0.01 m
To Find:
Excess pressure inside the soap bubble
Solution:
We know that the excess pressure inside a soap bubble is given by:
P = 4T/r
where T is the surface tension and r is the radius of the soap bubble.
Here, we are given the diameter of the soap bubble, so we need to convert it to radius:
r = 0.5 x diameter = 0.5 x 0.01 m = 0.005 m
Substituting the given values in the above equation, we get:
P = 4 x 25x10^(-3) / 0.005
P = 20 Pa
Answer:
Hence, the excess pressure inside the soap bubble is 20 Pa (Option B).
Given:
Surface tension of soap solution = 25x10^(-3) Nm^(-1)
Diameter of soap bubble = 1 cm = 0.01 m
To Find:
Excess pressure inside the soap bubble
Solution:
We know that the excess pressure inside a soap bubble is given by:
P = 4T/r
where T is the surface tension and r is the radius of the soap bubble.
Here, we are given the diameter of the soap bubble, so we need to convert it to radius:
r = 0.5 x diameter = 0.5 x 0.01 m = 0.005 m
Substituting the given values in the above equation, we get:
P = 4 x 25x10^(-3) / 0.005
P = 20 Pa
Answer:
Hence, the excess pressure inside the soap bubble is 20 Pa (Option B).
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Community Answer
The surface tension of soap solution is 25x10⁻3Nm⁻1. The e...
Excess pressure in a soap bubble is 4T/R
while ex pressure in a bubble is 2T/R
hope u note the difference in it
best of luck
while ex pressure in a bubble is 2T/R
hope u note the difference in it
best of luck
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