The decay constant of a radioactive element is defined as the reciprocal of the time interval after which the number of atoms of the radioactive eleme

Question

The decay constant of a radioactive element is defined as the reciprocal of the time interval after which the number of atoms of the radioactive eleme

The decay constant of a radioactive element is defined as the reciprocal of the time interval after which the number of atoms of the radioactive element falls to neraly
A. 50% of its original number
B. 36.8% of its original number
C. 63.2% of its original number
D. 75% of its original number

Monjur Alahi

5 views

2025-01-04 04:42

1 Answers

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Salim Ahmed Kawsar · Accepted Answer · 2023-02-05T15:29:48+06:00

Salim Ahmed Kawsar

Correct Answer - B
Number of atoms remains underyed, `N = N_(0)e^(-lamdat)`
`As, lamda=1/t" "("given")`
`impliesN=N_(o)e^(-lamda(1//lamda))=(N_(0))/(e)=36.8%of N_(0)`

5 views Answered 2023-02-05 15:29