Three particles having their charges in the ratio of $1 : 3 : 5$ produce the same spot on the screen in Thomson’s experiment. Their masses are in the ratio of
$5 : 3 : 1$
$3 : 1 : 5$
$1 : 3 : 5$
$5 : 1 : 3$
In the Millikan's experiment, the distance between two horizontal plates is $2.5 \,\,cm$ and the potential difference applied is $250\,\, V$ . The electric field between the plates will be ....... $V/m$
$1$ $J$ is equal to how many electron volt?
Positive rays was discovered by
Electric field and magnetic field in Thomson mass spectrograph are applied
An electron of charge $‘e’$ coulomb passes through a potential difference of $V$ volts. Its energy in ‘joules’ will be