When a magnetic field is applied in a direction perpendicular to the direction of cathode rays, then their

If two protons are moving with speed $v=4.5 \times 10^{5} \,m / s$ parallel to each other then the ratio of electrostatic and magnetic force between them

An electron is travelling in east direction and a magnetic field is applied in upward direction then electron will deflect in

A particle of mass $m = 1.67 \times 10^{-27}\, kg$ and charge $q = 1.6 \times 10^{-19} \, C$ enters a region of uniform magnetic field of strength $1$ $tesla$ along the direction shown in the figure. The speed of the particle is $10^7\, m/s.$ The magnetic field is directed along the inward normal to the plane of the paper. The particle enters the field at $C$ and leaves at $D.$ Then the angle $\theta$ must be :-.........$^o$

A charged particle moving in a magnetic field experiences a resultant force

An electron is travelling horizontally towards east. A magnetic field in vertically downward direction exerts a force on the electron along