Physics · 2020
JEE Main · 6 September 2020, Shift 1 · Q8
If the potential energy between two molecules is given by U =-A/(r^6)+B/(r^12), then at equilibrium, separation between molecules, and the potential…
If the potential energy between two molecules is given by $\displaystyle \mathrm{U}=-\frac{\mathrm{A}}{\mathrm{r}^6}+\frac{\mathrm{B}}{\mathrm{r}^{12}}$, then at equilibrium, separation between molecules, and the potential energy are :
Official answer
(1)
$\displaystyle \left(\frac{2 B}{A}\right)^{1 / 6},-\frac{A^2}{4 B}$
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JEE Main 2020 Physics question, with the answer from NTA’s final answer key. Where our answers come from.