A positive charge particle having charge q and mass m is projected into a region having perpendicular uniform magnetic field B. The particle enter into a magnetic field region with speed v0 normal to the boundary of magnetic field region as shown in the figure.
![](https://sahay.guru/wp-content/uploads/2020/09/12-1-586x1024.jpg)
![](https://sahay.guru/wp-content/uploads/2020/09/12-2-752x1024.jpg)