Which particles are responsible for conductivity of metals ?
Which of the following will have the least value of $\frac{q}{m}$
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?
From the following, what charges can be present on oil drops in Millikan's experiment
(Here e is the electronic charge)
An $\alpha$ particle is accelerated through a p.d of ${10^6}$ volt then $ K.E$ . of particle will be .......... $MeV$