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Two radioactive sources A and B of half ...

Two radioactive sources A and B of half lives-1h and 2h respectively initially contain the same number of radioactive atoms. At the end two hours, their rates of disintegration are in the ratio of :

A

`1:4`

B

`1:3`

C

`1:2`

D

`1:1`

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The correct Answer is:
C
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