The size of the nucleus is measured in

Radius of the nucleus is equal to $10^{-12} \ cm$ and that of the atom is equal to $10^{-8} \ cm$. What is the fraction of the volume of the atom occupied by the nucleus?

Calculate the ratio of the diameter of an atom to the diameter of its nucleus.

The volume of an atom is $10^5$ times the volume of its nucleus. If we consider the ratio of the radius of an atom to the radius of its nucleus,it is approximately $10^5$. Since volume $V = \frac{4}{3} \pi r^3$,the ratio of volumes is $(\frac{r_{atom}}{r_{nucleus}})^3 = (10^5)^3 = 10^{15}$. Therefore,the volume of an atom is $10^{15}$ times the volume of the nucleus. Choose the correct factor.

The volume occupied by the nucleus is about $ . . . . . . $ times the volume of an atom.

The nature of anode rays depends upon: