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The rate of disintegration of a radioact...

The rate of disintegration of a radioactive substance falls from `(40)/(3)` dps to `(5)/(3)` dps in 6 hours. The half - life of the radioactive substance is

A

`(6)/(7)` hours

B

2 hours

C

3 hours

D

1 hours

Text Solution

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The correct Answer is:
B
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