A radioactive isotope has a decay constant of 10-5s4. Calculate half life
A
6.93 x 10-5s
B
6.93 x 105s
C
6.93 x104s
D
6.93 x 10-4s
Verified Correct Answer: C.
Physical Principles & Numerical Solution
T (1)/2 = (0.693)/\lambda = (0.693)/10-5
= 0.693 x 105
= 6.93 x 104 sec
Source: Myschool Past Questions Archive (Record #14469)