Physics · 2026
JEE Main · 22 January 2026, Shift 1 · Q28
The escape velocity from a spherical planet A is 10 km / s. The escape velocity from another planet B whose density and radius are 10 % of those of…
The escape velocity from a spherical planet $\displaystyle A$ is $\displaystyle 10 \mathrm{~km} / \mathrm{s}$. The escape velocity from another planet $\displaystyle B$ whose density and radius are $\displaystyle 10 \%$ of those of planet $\displaystyle A$, is $\displaystyle \_\_\_\_$ $\displaystyle \mathrm{m} / \mathrm{s}$.
Official answer
From NTA’s final answer key for this paper.
(1)
$\displaystyle 100 \sqrt{10}$
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JEE Main 2026 Physics question, with the answer from NTA’s final answer key. Where our answers come from.