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CBSE Class 12 · 2009 · Modern PhysicsVery Short Answer

Two nuclei have mass numbers in the ratio

8 : 125

. What is the ratio of their nuclear radii?

Answer: $2 : 5$

Solution

Since

R = R_{0} A^{1/3}

,

\frac{R _{1}}{R _{2}} = (\frac{A _{1}}{A _{2}})^{1/3} = (\frac{8}{125})^{1/3} = \frac{2}{5} .

R_{1} : R_{2} = 2 : 5

CBSE Class 12 Board · 2009 · Subjective

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