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The count rate meter is used to measure ...

The count rate meter is used to measure that activity of a given amount of a radio active element. At one instant, the meter shows 475 counts/minute. Exactly 5 minutes later, is shown 270 counts/minute then
Half life of the sample is (in minute)

A

6.13

B

8.42

C

8.85

D

9.92

Text Solution

Verified by Experts

`T= 0.693 tau`
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