Q5 of 94 Page 440

The graph of ln(R/R₀) vs ln A (R=radius of nucleus and A=its mass number) is

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


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