The cathode rays have particle nature because of the fact that

In a discharge tube at $0.02\, mm$ pressure,there is a formation of
[$AIPMT$ $1996$]

The mass of a photoelectron is

$A$ cathode emits $1.8 \times 10^{14}$ electrons per second when heated. When $400 \ V$ is applied to the anode,all the emitted electrons reach the anode. The charge on an electron is $1.6 \times 10^{-19} \ C$. The maximum anode current is ............ $\mu A$.

Cathode rays and canal rays produced in a certain discharge tube are deflected in the same direction if

Write the name of the universal and fundamental particle of matter.