Question #02213

1 Answer
May 15, 2017

The statement is right.


Achromatic means "without colour" .

Electrons are invisible, so they are chromatic.

We see the path of cathode rays because the energetic electrons strike the atoms of the residual gases in the tube and cause the molecules to fluoresce.

In the picture above, the cathode rays are bent into a circle by an applied magnetic field.