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If half-life of a certain radioactive nu...

If half-life of a certain radioactive nucleus is 1000s. the disintegration constant is

A

`6.93 xx 10^2 s^(-1)`

B

`6.93 xx 10^(-4) s `

C

`6.93 xx 10^(-4) s^(-1)`

D

`6.93 xx 10^(-3)` s

Text Solution

Verified by Experts

The correct Answer is:
C
`k = (0.693)/(t_(1//2)) = (0.693)/(1000s) = 0.000693 = 6.93xx10^(-4) s^(-1)`
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