Physics · 2020
JEE Main · 5 September 2020, Shift 1 · Q7
A hollow spherical shell at outer radius R floats just submerged under the water surface. The inner radius of the shell is r. If the specific gravity…
A hollow spherical shell at outer radius $\displaystyle R$ floats just submerged under the water surface. The inner radius of the shell is $\displaystyle r$. If the specific gravity of the shell material is $\displaystyle \frac{27}{8}$ w.r.t water, the value of r is :
Official answer
(4)
$\displaystyle \frac{8}{9} R$
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JEE Main 2020 Physics question, with the answer from NTA’s final answer key. Where our answers come from.