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JIPMER2013PhysicsNuclear Physics

The half-life of radio isotope is 4 h . If initial mass of the isotope was 200 g , then mass remaining after 24 h will be

Options

  1. A1.042 g
  2. B2.084 g
  3. C3.125 g
  4. D4.167 g

Correct answer

C. 3.125 g

Step-by-step solution

aligned & M=M₀ ( 1 2 )^ t / t_ 1 / 2 & & M=200 ( 1 2 )^ 24 / 2 =200 ( 1 2 )^6= 200 64 =3.125 ~g aligned

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