The graph of ln(R

As we know that the radius of a nucleus is

Applying log on both the sides, we have,

Or

Thus the above equation gives us an equation of a straight line

Here, y=ln(R/R₀) and x=ln(A).

Since in the above equation, c=0.Therefore, the graph obtained will be a straight line passing through the origin.

Thus (a) is the correct answer.

(b) is not the correct answer as the equation of a parabola is

(c) is not correct as the equation of ellipse is