A particle of charge 1.6 μ C and mass 16 μ g is present in a strong magnetic field of 6.28 T. The particle is then fired perpendicular to magnetic…

A particle of charge $\displaystyle 1.6 \mu \mathrm{C}$ and mass $\displaystyle 16 \mu \mathrm{~g}$ is present in a strong magnetic field of $\displaystyle 6.28$ T. The particle is then fired perpendicular to magnetic field. The time required for the particle to return to original location for the first time is $\displaystyle \_\_\_\_$ s. $\displaystyle (\pi=3.14)$