Question

(a) What are canal rays ? Who discovered them ? What is the charge and mass of canal ray ?

Answer 1

An anode ray (also positive ray or canal ray) is a beam of positive ions that is created by certain types of gas discharge tubes. They were first observed in Crookes tubes during experiments by the German scientist Eugen Goldstein, in 1886.Later work on anode rays by Wilhelm Wien and J. J. Thomson led to the development of mass spectrometry
charge of canal ray is positive as they consist of photon.
mass of one particle of canal ray is equal to mass of photon that is equal to 1 amu.
Hope it helps u!!

Answer 2

the group of moving proton is called canal rays anod rays was firstly discoverd by goldstein in eighteen eighty six ,one point six into ten to the power minus nineteen coulam charge and mass one point six seven four into ten to the power minus twenty four gram