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The mean life of an elementary particle ...

The mean life of an elementary particle pion is `2xx10^(-7)` ns. The age of the univers is about `4xx10^9` years. Identify a physically meaning time that is approximately half way between these two on a logarithmic scale.

A

5s

B

10s

C

0.5s

D

4s

Text Solution

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The correct Answer is:
B
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