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The ratio of mass densities of nuclei of 40Ca and 16O is close to -

1. 0.1
2. 2
3. 5
4. 1

Correct answer: 1

Solution

Nuclear density rho = m/V with R proportional to A^(1/3), so density is essentially constant for all nuclei. The ratio for Ca-40 to O-16 is ~1.

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