In Thomson spectrograph experiment, four positive ions $P,Q,R$ and $S$ are situated on $Y-X$ curve a shown in the figure
The specific charge of $R$ and $S$ are same
The masses of $P$ and $S$ are same
The specific charges of $Q$ and $R$ are same
The velocities of $R$ and $S$ are same
In Thomson's experiment if the value of $q/m$ is the same for all positive ions striking the photographic plate, then the trace would be
How mass of an electron can be obtained ?
A beam of cathode rays is subjected to crossed electric $(E)$ and magnetic fields $(B).$ The fields are adjusted such that the beam is not deflected. The specific charge of the cathode rays is given by (where $V$ potential diffrence between kethod and anode)
From the following, what charges can be present on oil drops in Millikan's experiment
(Here e is the electronic charge)
A charge of magnitude $3e$ and mass $2m$ is moving in an electric field $\overrightarrow E .$ The acceleration imparted to the charge is