Two nuclei have their mass numbers in the ratio of 1:3. The ratio of their nuclear densities would be

(a) 1:3

(b) 3:1

(c) ${\left(3\right)}^{1/3}:1$

(d) 1:1

Density of nuclear matter is indepent of mass number, so the required ratio is 1:1.

Alternative:

${A}_{1}:{A}_{2}=1:3$

Their radii will be in the ratio

Their nuclear densities will be the same .

Difficulty Level:

• 19%
• 13%
• 24%
• 46%