The half life of a radioactive substance is 2 seconds. Calculate the decay const...
Question
The half life of a radioactive substance is 2 seconds. Calculate the decay constant
Options
A)
0.035s
B)
0.347s
C)
0.151s
D)
0.576s
Related Lesson: Summarizing Half-Life and Activity | Radioactivity and Nuclear Physics
The correct answer is B.
Explanation:
Half life, \( T_{½}=2 \)
\( T_{½}=0.693÷\lambda \)
\( \lambda=0.693÷T_{½} \)
\( \lambda=0.693÷2 \)s
\( \lambda=0.3465 \)s
\( \lambda\approx 0.347 \)s
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Half life, \( T_{½}=2 \)
\( T_{½}=0.693÷\lambda \)
\( \lambda=0.693÷T_{½} \)
\( \lambda=0.693÷2 \)s
\( \lambda=0.3465 \)s
\( \lambda\approx 0.347 \)s
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