If the decay constant of a radioactive substanc... - JAMB Physics 2009 Question
If the decay constant of a radioactive substance is 0.231s1, the half-life is?
A
3.00 s
B
0.12 s
C
0.33 s
D
1.50 s
correct option: a
Half-life, T (1)/2 = (0.693)/∆ = (0.693)/ 0.231 = 3.0sec
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