Question

A radioactive isotope is being produced at a constant rate X. Half-life of the radioactive substance is Y. After some time the number of radioactive nuclei become constant. The value of this constant is:

• A. $\frac{XY}{\ln(2)}$
• B. XY
• C. (XY) ln (2)
• D. $\frac{X}{Y}$

Answer 1

Answer: (A)

$\frac{XY}{\ln(2)}$

Answer 2

Number of radio-nuclei become constant, when

X = lN

or N = $\frac { x } { \lambda }$ ==