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Q.

A soap bubble assumes a spherical surface. Which of the following statement is wrong

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a

The soap film consists of two surface layers of molecules back to back

b

The bubble encloses air inside it

c

The pressure of air inside the bubble is less than the atmospheric pressure; that is why the atmospheric pressure has compressed it equally from all sides to give it a spherical shape

d

Because of the elastic property of the film, it will tend to shrink to as small a surface area as possible for the volume it has enclosed

answer is C.

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Detailed Solution

The pressure of air inside the bubble is more than the atmospheric pressure; that is why the atmospheric pressure has compressed it equally from all sides to give it a spherical shape.
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A soap bubble assumes a spherical surface. Which of the following statement is wrong