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JIPMER2011PhysicsNuclear Physics

If r₁ and r₂ are the radii of the atomic nuclei of mass numbers 64 and 125 respectively, then the ratio (r₁ / r₂ ) is

Options

  1. A64 125
  2. B64 125
  3. C5 4
  4. D4 5

Correct answer

D. 4 5

Step-by-step solution

r=r₀(A)^ 1 / 3 r₁ r₂ = ( A₁ A₂ )^ 1 / 3 = ( 64 125 )^ 1 / 3 = [ ( 4 5 )^3 ]^ 1 / 3 = 4 5

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