Physics · 2021
JEE Main · 25 July 2021, Shift 2 · Q8
Two spherical soap bubbles of radii r_1 and r_2 in vacuum combine under isothermal conditions. The resulting bubble has a radius equal to:
Two spherical soap bubbles of radii $\displaystyle r_1$ and $\displaystyle r_2$ in vacuum combine under isothermal conditions. The resulting bubble has a radius equal to :
Official answer
(4)
$\displaystyle \sqrt{r_1^2+r_2^2}$
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JEE Main 2021 Physics question, with the answer from NTA’s final answer key. Where our answers come from.