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Some nuclei of a radioactive material ar...

Some nuclei of a radioactive material are undergoing radioactive decay. The time gap between the instances when a quarter of the nuclei have decayed and when half of the nuclei have decayed is given as :
(where `lamda` is the decay constant)

A

`1/2(l n2)/(lamda)`

B

`(ln2)/(lamda)`

C

`(2ln2)/(lamda)`

D

`("ln"(3)/(2))/(lamda)`

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