The half-life period of a radio-active element `X` is same as the mean life time of another radio-active element `Y`. Initially they 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 alwaysC. Y will decay at a faster rate than XD. X will decay at a faster rate than y

The half-life period of a radio-active element `X` is same as the mean

1.	The half-life period of a radio-active element `X` is same as the mean life time of another radio-active element `Y`. Initially they 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 alwaysC. Y will decay at a faster rate than XD. X will decay at a faster rate than y
Answer» Correct Answer - D

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