Question

The constancy of $\frac{e}{m}$ ratio for electrons inspite of variation of gas present in the discharge tube or of the material of the cathode shows that

• A. electrons are negatively charged.
• B. electrons are universal constituents of matter.
• C. electrons are the lightest of all particles.
• D. mass of the electrons is of the mass of H-atom.

Answer 1

The correct option is B electrons are universal constituents of matter.

Constancy of $\frac{e}{m}$ ratio for electrons shows that the electrons are universal constituent
particles