Physics · 2018
JEE Main · 16 April 2018, Shift 1 · Q9
A small soap bubble of radius 4 cm is trapped inside another bubble of radius 6 cm without any contact. Let P_2 be the pressure inside the inner…
A small soap bubble of radius $\displaystyle 4$ cm is trapped inside another bubble of radius $\displaystyle 6$ cm without any contact. Let $\displaystyle \mathrm{P}_2$ be the pressure inside the inner bubble and $\displaystyle \mathrm{P}_0$, the pressure outside the outer bubble. Radius of another bubble with pressure difference $\displaystyle \mathrm{P}_2-\mathrm{P}_0$ between its inside and outside would be :
Official answer
(2)
2.$\displaystyle 4$ cm
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JEE Main 2018 Physics question, with the answer from NTA’s final answer key. Where our answers come from.