Question

Initial decay rate of a substance is 800 disintegration/
sec. If half life of substance is 1 sec. then after three
second the decay rate will be :-
(1) 800 disintegration/sec.
(2) 400 disintegration/sec.
(3) 200 disintegration/sec.
(4) 100 disintegration/sec.
Bhai pavan mujhe abhi bhi smj nii aaya jese 1.602 - power 2.079 ko solv kese kiya​

Answer 1

may be if we take value of e power 0.125

then,

800*0.125=100

100 disintegration/sec

hope it helps..

i am not pavan..

my name is pavanii

problem solve have any doubts