Q 12-13-086JEE MainJEE Main 2022 (25 Jun, Shift 2)Easy
Which of the following figures represents the variation of $\ln\left(\dfrac{R}{R_0}\right)$ with $\ln A$? (where $R$ = radius of a nucleus and $A$ = its mass number)
Answer: (B) see figure
$R = R_0A^{1/3}\Rightarrow\ln\dfrac{R}{R_0} = \dfrac13\ln A$.
This is a straight line through the origin with slope $\dfrac13$.
Solution by Sreeraj P, M.Sc Physics