A charged particle of mass m is moving with speed v0 in a circle or radius r0 in a uniform magnetic field that is perpendicular to the plane of motion. The time required for one revolution of the orbit is t0 . If the particle explodes into two fragments of equal mass and equal charge, one of which is formed at rest, the time for the second fragment to complete one revolution of its orbit is .

what experimental evidence led scientists to change from the previous model to this one?

a few of the positive particles aimed at a gold foil seemed to bounce back.

the colors of light emitted from heated atoms had very specific energies.

experiments with water vapor showed that elements combine in specific proportions.

cathode rays were bent in the same way whenever a magnet was brought near them.

option number c is the right answer.