Cathode rays are similar to visible light rays in that
They both can be deflected by electric and magnetic fields
They both have a definite magnitude of wavelength
They both can ionise a gas through which they pass
They both can expose a photographic plate
In Millikan's experiment for the determination of the charge on the electron, the reason for using the oil is
Explain emission of electron from metal. Define work function. Write its unit, work function of metal depend on which factors ?
Which particles are responsible for conductivity of metals ?
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 ....... $V/m$
From the following, what charges can be present on oil drops in Millikan's experiment
(Here e is the electronic charge)