For a radioactive sample, at given instant, number of active nuclei is N and its decay constant is `lambda` then the incorrect relation is–

Two radioactive nuclei have same number of nuclei initially and decay constants as 5lambda . And 4lambda respectively. The ratio of number of nuclei will be 1/e^(2) after time:

State the law of radioactive decay, If N_0 is the number of radioactive nuclei in the sample at same initial time, find out the relation to determine the number N present at a subsequent time. Draw a plot of N as a function of time.

A radioactive nuclide is produced at a constant rate of alpha per second . It’s decay constant is lambda . If N_(0) be the no. of nuclei at time t=0 , then max. no. nuclei possible are : a) N_(0) b) alpha//lambda c) N_(0)+(alpha)/(lambda) d) (lambda)/(sigma)+N_(0)s

A radioactive nuclide is produced at a constant rate of alpha per second . It’s decay constant is lambda . If N_(0) be the no. of nuclei at time t=0 , then max. no. nuclei possible are :

The decay constant lambda of a radioactive sample:

If N_0 = Number of radioactive nuclei present at t -= 0, N = Number of radioactive nuclei present at time t = t and lambda is the decay constant, then the radioactive decy equation is

In a sample of radioactive material, what percentage of the initial number of active nuclei will decay during one mean life ?

In a sample of radioactive material, what percentage of the initial number of active nuclei will decay during one mean life ?

In a sample of radioactive material, what percentage of the initial number of active nuclei will decay during one mean life ?

The rate at which a particular decay process occurs in a radio active sample, is proportional to the number of radio active nuclei present. If N is the number of radio active nuclei present at some instant, the rate of change of N is (dN)/(dt) = - lambdaN . Consider radioavtive decay of A to B which may further decay, either to X or to Y, lambda_(1),lambda_(2) and lambda_(3) are decay constants for A to B decay, B to X decay and B of Y decay respectively. If at t = 0 number of nuclei of A, B, X and Y are N_(0), N_(0) , zero and zero respectively and N_(1),N_(2),N_(3),N_(4) are number of nuclei A,B,X and Y at any intant. At t = oo , which of the following is incorrect ?