Physics · 2022
JEE Main · 25 July 2022, Shift 2 · Q33
A drop of liquid of density ρ is floating half immersed in a liquid of density σ and surface tension 7.5 × 10^-4 Ncm^-1. The radius of drop in cm…
A drop of liquid of density $\displaystyle \boldsymbol{\rho}$ is floating half immersed in a liquid of density $\displaystyle \boldsymbol{\sigma}$ and surface tension $\displaystyle 7.5 \times 10^{-4} \mathrm{Ncm}^{-1}$. The radius of drop in cm will be :
$$\left(\mathrm{g}=10 \mathrm{~ms}^{-2}\right)
$$
Official answer
(1)
$\displaystyle \frac{15}{\sqrt{(2 \rho-\sigma)}}$
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JEE Main 2022 Physics question, with the answer from NTA’s final answer key. Where our answers come from.