Question

Which of the following is not correct
A. `t_(1//2) = (0.693)/(k)`
B. N = N_(0)e^(-kt)`
C. `(1)/(N) - (1)/(N_(0)) = "ln" kt_(1//2)`
D. None of these

Answer 1

Correct Answer - c
`t_(1//2) = (0.693)/(k) , N = N_(0) e^((-kt))`
ln `(N)/(N_(0)) = -kt implies` kt = ln `((N_(0))/(N))`
`therefore (1)/(N) - (1)/(N_(0)) `= ln `kt_(1//2)` is not correct .