A counter rate - meter is used to measure the activity of a given sample. At one instant, the meter show 4750 counts per minute. Five minutes later it shows 2700 counts per minute. The half-life of the sample is nearly ______ minute [log_(10)^(1.760)=0.2455]

A counter rate - meter is used to measure the activity of a given samp

1.	A counter rate - meter is used to measure the activity of a given sample. At one instant, the meter show 4750 counts per minute. Five minutes later it shows 2700 counts per minute. The half-life of the sample is nearly ______ minute [log_(10)^(1.760)=0.2455]
Answer» 15 min 10 min 3 min 6 min Answer :A

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A counter rate - meter is used to measure the activity of a given sample. At one instant, the meter show 4750 counts per minute. Five minutes later it shows 2700 counts per minute. The half-life of the sample is nearly ______ minute [log_(10)^(1.760)=0.2455]

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