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Two nuclei P, Q have equal no.of atoms a...

Two nuclei P, Q have equal no.of atoms at t= 0. Their half-life are 3 hours, 9 hours. Compare their rates of disintegration after 18 hrs from the start.

A

`3:16`

B

`16:3`

C

`1:3`

D

`3:1`

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A
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