The half-life of a radioactive substance is
A
its average life time
B
one-half the value of its decay constant.
C
the length of time needed by the substance to decay completely
D
the length of time during which the activity of the substance reduces by 50%.
Verified Correct Answer: D.
Physical Principles & Numerical Solution
No expanded working has been attached for this question yet. The verified answer is Option D.
Source: Myschool Past Questions Archive (Record #25512)