Which scientist invented cathode rays ?
Energy of electrons can be increased by allowing them
An electron (charge =$1.6 \times {10^{ - 19}}C$) is accelerated through a potential of $ 100,000 V$. The energy acquired by the electron is
Which one of the following devices makes use of the electrons to strike certain substances to produce fluorescence
What is the unit of energy in atomic and nuclear physics ? Define it.
Write and explain methods to obtain emission of electron from metal.