Physics · 2019
JEE Main · 9 April 2019, Shift 2 · Q8
A test particle is moving in a circular orbit in the gravitational field produced by a mass density ρ( r )=K/(r^2). Identify the correct relation…
A test particle is moving in a circular orbit in the gravitational field produced by a mass density $\displaystyle \rho(\mathrm{r})=\frac{\mathrm{K}}{\mathrm{r}^2}$. Identify the correct relation between the radius $\displaystyle R$ of the particle's orbit and its period T :
Official answer
(4)
$\displaystyle T / R \text { is a constant }$
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JEE Main 2019 Physics question, with the answer from NTA’s final answer key. Where our answers come from.