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NTA Abhyas JEE Main2020PhysicsNuclear PhysicsPractice

C 14 has half-life 5700 year . At the end of 11400 years , the actual amount left is

Options

  1. A0 . 5 times of original amount
  2. B0 . 25 times of original amount
  3. C0 . 125 times of original amount
  4. D0 . 0625 times of original amount

Correct answer

B. 0 . 25 times of original amount

Step-by-step solution

N = N 0 × 1 2 1 1 4 0 0 / 5 7 0 0 = N 0 1 2 2 = 0.25 N 0

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