PG entrance exam CUET PG 2025 Mock Test Physics Relativity

Life time of a muon in laboratory frame is \(3\times {{10}^{-6}}s\) if the muon files with the speed of 0.8c. What is the life time of muon in its own frame.

1
\(4\times {{10}^{-8}}s\)
2
\(3\times {{10}^{-6}}s\)
3
\(5\times {{10}^{-6}}s\)
4
none
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