When the speed of electrons increases, then the value of its specific charge
Increases
Decreases
Remains unchanged
Increases upto some velocity and then begins to decrease
The ratio of specific charge of an $\alpha $ -particle to that of a proton is
What is charge on an electron ?
Cathode rays are similar to visible light rays in that
In Millikan's experiment for the determination of the charge on the electron, the reason for using the oil is
Write speed of cathode rays.