A scientist found a specimen in which the decay constant of nuclei X and nuclei Y are 9 and respectively. At t=0 ~s the number of X and Y nuclei were the same. The ratio of number of X nuclei to that of Y nuclei will reduce to (1 / e)^4 aft

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A scientist found a specimen in which the decay constant of nuclei X and nuclei Y are 9 and respectively. At t=0 ~s the number of X and Y nuclei were the same. The ratio of number of X nuclei to that of Y nuclei will reduce to (1 / e)^4 after a time interval of

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A scientist found a specimen in which the decay constant of nuclei X and nuclei Y are 9 and respectively. At t=0 ~s the number of X and Y nuclei were the same. The ratio of number of X nuclei to that of Y nuclei will reduce to (1 / e)^4 after a time interval of

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