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A radioactive isotope has a decay constant of 10\(^{-6}\)s\(^{-1}\). Calculate its half-life.

Physics
JAMB 2016

A radioactive isotope has a decay constant of 10\(^{-6}\)s\(^{-1}\). Calculate its half-life.

  • A. 5.93 x 106s
  • B. 6.93 x 105s
  • C. 6.93 x 109s
  • D. 5.93 x 107s
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Correct Answer: Option B
Explanation

t\(_{1/2}\) = \(\frac{0.693}{\gamma}\) = \(\frac{0.693}{10^{-6}}\)

= 6.93 x 10\(^5\)

There is an explanation video available below.


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Explanation Video

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