Question on: JAMB Physics - 2011
A radioactive isotope has a decay constant of 10-5s4. Calculate half life
A
6.93 x 105s
B
6.93 x 105s
C
6.93 x104s
D
6.93 x 104s
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Correct Option: C
T (1)/2 = (0.693)/λ = (0.693)/10-5
= 0.693 x 105
= 6.93 x 104 sec
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