NEET Physics Nuclei Questions Solved


Carbon-14 decays with half-life of about 5,800 years. In a sample of bone, the ratio of carbon-14 to carbon-12 is found to be 14 of what it is in free air. This bone may belong to a period about x centuries ago, where x is nearest to 
(a) 2×58                        (b) 58
(c) 58/2                          (d) 3×58

 (a) To becomes 14th, it requires time of two half lives
i.e., t = 2(T1/2) = 2×5800 = 2×58 centuries

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