Question

Electrons, nuclei, atoms and molecules like all forms of matter, will fall under the influence of gravity. Consider separately the beam of electrons, of nuclei, of atoms and of molecules travelling a horizontal distance of $1m$. Let the average speed of electrons be $3\times {10}^{7}m{s}^{-1}$, for a thermal neutron $2.2\times {10}^{5}m{s}^{-1}$, for a neon atom $5.8\times {10}^{2}m{s}^{-1}$ and for an oxygen molecule $4.6\times {10}^{2}m{s}^{-1}$. The beams move through vacuum horizontally with initial velocities mentioned above. A golf ball is also projected horizontally with $20m{s}^{-1}$ in vacuum. Then there is a effect of electron-electron repulsion is true or false?

• A. True
• B. False

Answer 1

The correct option is B False

All the molecules within the vacuum are neutral and hence there would be no electron electron repulsion within the vacuum or on the electrons travelling. Hence option B is correct.