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The radius of a nucleus of mass number 64 is 4.8 fermi. Then the mass number of another nucleus having radius of 4 fermi is (1000)/x, where x is ______.

Asked in JEE Main 1st Feb 1st Shift 2024 · Nuclear radius and density

Answer: 27

Step-by-step solution

A∝ R³: A=64×(4/(4.8))³=64×(125)/(216)=(1000)/(27)

→ 27

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