Assertion: If an electron and proton possessing same kinetic energy enter an electric field in a perpendicular direction, the path of the electron is more curved than that of the proton. Reason: Electron forms a larger curve due to its small mass.

Step-by-step solution

As q E= m v^2 r , r= m v^2 q E = 2 K q E ( . where .K= 1 2 m v^2 ) i.e., r 1 q . Since electron and proton have equal charge, r is the same for both of them. Here, r depends on K (which is given to be the same for both the particles) and as such not on their masses.