Jee Main 2024 01 02 2024 Shift 1 - Question20
Question 20
Nuclear mass and size of nucleus of an element $A$ are 64 and 4.8 femtometer. If size of nucleus of element $B$ is 4 femtometer then its nuclear mass will be $\frac{1000}{x}$
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Answer: (27)
Solution:
$R^{3}=\alpha A$
$ \begin{alignedat} & \frac{\left(4.8^{3}\right)}{4^{3}}=\frac{64}{M} \\ & M=\frac{16 \times 4 \times 16 \times 4}{48 \times 48 \times 48} \times 10^{3} \end{aligned} $





