Which of the following law is used in the Millikan's method for the determination of charge
Ampere's law
Stoke's law
Fleming's left hand rule
Fleming's right hand rule
Which particles are responsible for conductivity of metals ?
Define work function of metal and write its unit.
The mass of a particle is $400$ times than that of an electron and the charge is double. The particle is accelerated by $5 V$. Initially the particle remained in rest, then its final kinetic energy will be ........... $eV$
In $1897$, J.J.Thomson invented which particle ?
Write name of universal and fundamental particle of matter.