1.

The half - life period of a radioactive element x is same as the mean life time of another radioactive element yInitially both of them have the same number of atoms. Then,n

Answer»

X and Y decay at same rate always
X will decay faster than Y
Y will decay faster than X
X and Y have same decay rate initially

Solution :`T_X=T_(Y(AVG)) = 1.44 T_Y`
i.e. `T_X gt T_Y THEREFORE lambda_X lt lambda_Y`
`because R=lambdaN` and N is same for both, `therefore R_X lt R_Y` or `R_Y gt R_X`
i.e. Y will decay faster than X.


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