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A radioactive isotope has a decay constant of 10-5s4. Calculate half life

A radioactive isotope has a decay constant of 10-5s4. Calculate half life
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  • A 6.93 x 105s
  • B 6.93 x 105s
  • C 6.93 x104s
  • D 6.93 x 104s
Correct Answer: Option C
Explanation:
T (1)/2 = (0.693)/λ = (0.693)/10-5
= 0.693 x 105
= 6.93 x 104 sec

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