A beam of particles of half life \(8\times {{10}^{-6}}s\) travel in laboratory frame with the speed of 0.6 time the speed of light. The observed half life of the same particles will be.
1
\( {{10}^{-5}}s\)
2
\( {{10}^{-6}}s\)
3
\(8\times {{10}^{-6}}s\)
4
none
5
Question Not Attempted