Cathode rays are
Positive rays
Neutral rays
He rays
Electron waves
$1$ $J$ is equal to how many electron volt?
Electron volt is a unit of
An electron of charge $‘e’$ coulomb passes through a potential difference of $V$ volts. Its energy in ‘joules’ will be
Cathode rays and canal rays produced in a certain discharge tube are deflected in the same direction if
In a parabola spectrograph, the velocities of four positive ions $P,Q,R$ and $S$ are $v_1$, $v_2$, $v_3$ and $v_4$ respectively