Q. Which of the following figure represents the variation of $\text{In}\left(\frac{R}{R_{0}}\right)$ with $\ln A($ If $R=$ radius of a nucleus and $A =$ its mass number)
Solution:
$R = R _{0} A ^{\frac{1}{3}}$
$\ln \frac{ R }{ R _{0}}=\frac{1}{3} \ln A$
