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JEE Main levelSingle correct optionDifficulty 2 of 3as012

Nuclear radius follows . The ratio of the radius of a nucleus of mass number 125 to that of mass number 8 is

  1. A15.6
  2. B3.95
  3. C2.5
  4. D5.0

Answer: C

= = 5/2 = 2.5. The value 15.6 forgets the cube root.
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