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Question: Answered & Verified by Expert
The radius of ${ }_{29} \mathrm{Cu}^{64}$ nucleus in Fermi is (given $\mathrm{R}_{0}=1.2 \times 10^{-15} \mathrm{~m}$ )
PhysicsNuclear PhysicsKCETKCET 2012
Options:
  • A $9.6$
  • B $4.8$
  • C $1.2$
  • D $7.7$
Solution:
2991 Upvotes Verified Answer
The correct answer is: $4.8$
$\begin{aligned} \mathrm{R}=\mathrm{R}_{0} \mathrm{~A}^{1 / 3} &=1.2 \times 10^{-15} \times(64)^{1 / 3} \\ &=4.8 \times 10^{-15} \mathrm{~m} \end{aligned}$ or $\quad \mathrm{R}=4.8$ fermi

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