JEE Main 2022 Physics question
A spherical soap bubble of radius 3 cm is formed inside another spherical soap bubble of radius 6 cm. If the internal pressure of the smaller bubble of radius 3 cm in the above system is equal to the internal pressure of the another single soap bubble of radius r cm. The value of r is
Answer: 2
Solution
The excess pressure inside the inner bubble over the outside of the bigger bubble is
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