NEET Previous Year Questions on Nuclei – Physics Chapter-wise

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Topic Question Set

Q 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 [2022]

1 : 1
4 : 5
5 : 4
25 : 16

1

2

3

4

(3)

Nuclear radius, $R = R_{0} A^{1 / 3}$ ...(i)

where $R_{0}$ is a constant and $A$ is the mass number.

From eq. (i), $R \propto A^{1 / 3}$

$\frac{R_{1}}{R_{2}} = {(\frac{125}{64})}^{1 / 3}, \frac{R_{1}}{R_{2}} = \frac{5}{4}$

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