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Physics · 2020
JEE Main · 9 January 2020, Shift 2 · Q9
A small spherical droplet of density d is floating exactly half immersed in a liquid of density ρ and surface tension T. The radius of the droplet is…
A small spherical droplet of density d is floating exactly half immersed in a liquid of density $\displaystyle \rho$ and surface tension $\displaystyle T$. The radius of the droplet is (take note that the surface tension applies an upward force on the droplet) :
Official answer
(2)
$\displaystyle r=\sqrt{\frac{3 T}{(2 d-\rho) g}}$
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