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Question

The excess pressure inside a soap bubble is:


A
Inversely proportional to the surface tension
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B
Inversely proportional to its radius
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C
Directly proportional to square of its radius
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D
Directly proportional to its radius
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Solution

The correct option is C Inversely proportional to its radius
$$\Delta p = \dfrac{4T}{R}$$
$$\Delta p  \propto \dfrac{1}{R}$$

Physics

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