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The half-life of a radioactive substance is 2 seconds. Calculate the decay constant

The half-life of a radioactive substance is 2 seconds. Calculate the decay constant
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  • A 0.035s-1
  • B 0.151s-1
  • C 0.347s-1
  • D 0.576s-1
  • E 1.386s-1
Correct Answer: Option C
Explanation:
\(\lambda = \frac{0.693}{T_{\frac{1}{2}}} = \frac{0.693}{2}\)
= 0.347s-1

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