Question

What is e/m ratio?what was the value of this ratio for a particle in the cathode rays?

Answer 1

em ratio is firstly describe by jj Thomson it is the ratio of charge of electron and mass of electron you can see in ncert chaptre 1 valie of that

Answer 2

Explanation:

The ratio of e/m for a cathode ray is fixed at 1.758820×10

11

C/kg. It is equal to the ratio of e/m for an electron. This is because cathode rays consists of electrons.

Note: In e/m, e refers to charge and m refers to mass.