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N(1) atoms of a radioactive element emit...

`N_(1)` atoms of a radioactive element emit `N_(2)` beta partilces per second. The decay cosntant of the element is (in `s^(-1)`)

A

`N_1//N_2`

B

`N_2//N_1`

C

`N_1 (ln 2)`

D

`N_2 (ln 2)`

Text Solution

Verified by Experts

The correct Answer is:
B
`-""(dN)/(dt) = lambda N implies N_(2) = lambda N_(1)`
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