An `prop -` particle contains ......charge and ........mass units.

A particle having no charge and almost no rest mass

A charged particle of charge q and mass m enters perpendicularly in a magnetic field vecB . Kinetic energy of the particle is E, then frequency of rotation is

A particle of mass .m. and charge q is placed at rest in a unifrom electric field E and then released. The K.E. attained by the particle after moving a distance y is

What are the charge and mass of an electron?

Figure shows tracks of three charged particles in a uniform electrostatic field. Give the signs of the three charges. Which particle has the highest charge to mass ratio?