Question

The plots of $\ln \left[\frac{R}{R_0}\right]$ vs $\ln A$ is :

Where, ($R$ is radius of nucleus and $A$ is its mass number)

• A. straight line
• B. a parabola
• C. an ellipse
• D. a circle

Answer 1

The correct option is A straight line

As we know,

$R=R_0{A}^{1/3}$ $(R_0=1.1\times {10}^{-15}m)$

$\therefore \ln \frac{R}{R_0}=\frac{1}{3}\ln A$

And the graph will be a straight line.

Option A is correct.