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The rate of disintegration of a radioact...

The rate of disintegration of a radioactive substance falls from 800 `decay//min` to 100 `decay//min` in 6 hourse. The half life of the radioactive substance is :

A

`6//7`

B

2 hrs

C

3 hrs

D

1 hr

Text Solution

Verified by Experts

The correct Answer is:
B
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