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Question

If more air is pushed in a soap bubble, the pressure in it

A
decreases
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B
becomes zero
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C
remains same
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D
increases
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Solution

The correct option is D decreases
When more air is pushed into the bubble it expands i.e. its radius increases and we know that excess pressure in a bubble is inversely proportional to the radius of the bubble. So the pressure inside the bubble decreases as we push more air into it. So the correct choice is 'A'.

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