An a - particle and a protein are subjected to the same electric field , then the ratio of the force acting on them is

Two electrons Beams having velocities in the ratio 1:2 are subjected to the same transverse magnetic field . The ratio of the deflections is

A proton and an alpha -particle start from rest in a uniform electric field, then the ratio of times of flight to travel same distance in the field is

When a charged particle moving with a velocity vecv is subjected to a magnetic field vecB , the force acting on it is non zero. Would the particle gain any energy?

Proton, deuteron and alpha particle have same momentum. They are projected in the same magnetic field. Then choose the correct ratio of forces and their speeds.

A proton, deutron and alpha particle are moving with same momentum in uniform magnetic field. The ratio of magnetic forces acting on them is___and their speed are in ratio____