`N` atoms of a radioactive element emit `n` alpha particles per second. The half-life of tge element is.

N atoms of a radioactive element emit n , alpha particles per sec. Half life of the element is

N atoms of a radioactive substance emit n alpha -particles per second. The half life of the radioactive substance is

N_(1) atoms of a radioactive element emit N_(2) beta partilces per second. The decay cosntant of the element is (in s^(-1) )

N_(1) atoms of a radioactive element emit N_(2) beta partilces per second. The decay cosntant of the element is (in s^(-1) )

N_1 atoms of a radioactive element emit N_2 beta particles per second. Find the decay constant of the element (in s^(-1) )

The rate of decay of a radioactive element at t=0 instant 10^(3) disintegrations per second. If the half life of the elements is Is, then the rate of decay after Is will be

The half life of 1 gm of a radioactive element of atomic weight M is T. The half life of M gm of the same element will be