Saved Bookmarks
| 1. |
The half-life period of a radioactive element x is same as the mean life time of another radioactive element y. Initially, both of them have the same number of atoms. Then, (a) x and y have the same decay rate initially (b) x and y decay at the same rate always (c) y will decay at a faster rate than x (d) x will decay at a faster rate than yA. X and Y have the same decay rate intiallyB. X and Y decay at the same rate alwaysC. Y will decay at a faster rate than XD. X will decay at a faster rate than Y |
|
Answer» Correct Answer - C As given `(T)_(x)=tau_(y) or 0.693/(lambda_(x))=1/(lambda_(y))` `lambda_(x)=0.693lambda_(y) or lambda_(x)gtlambda_(x)` As rate of decay =`lambdaN` So Y decays at faster rate than X. |
|