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Two radioactive material A and B have di...

Two radioactive material A and B have disintegration constants `10lambda and2lambda` respectively. If initially they have same number of nuclei, then the ration of number of nuclei of A and B will be `(1)/(e)` after a time of :

A

`(1)/(10lambda)`

B

`(1)/(11lambda)`

C

`(11)/(10lambda)`

D

`(1)/(8lambda)`

Text Solution

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The correct Answer is:
D
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