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Atoms and Nuclei question

2022 · Q173
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Atoms and Nuclei question

2022 · Q173

NEETPhysicsAtoms and NucleiMCQ+4 / −1

A nucleus of mass number 189 splits into two nuclei having mass number 125 and 64. The ratio of radius of two daughter nuclei respectively is

  1. A
    1 : 1
  2. B
    4 : 5
  3. C
    5 : 4
  4. D
    25 : 16
View written solutionFree

Correct answer: C

Radius of nuclei with mass number A varies as

$R = {R_0}{A^{1/3}}$

$${{{R_1}} \over {{R_2}}} = {\left( {{{125} \over {64}}} \right)^{1/3}} = {5 \over 4} = 5:4$$

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