JAMB - Physics (1993 - No. 34)
Which of the following statements correctly describe(s) cathode rays? i. they consist of tiny particles carrying negative electric charges. ii. they are deflected in a magnetic field but not in an electric field. iii. they consist of fast moving neutrons and deflected in an electric field.
i only
ii only
i and ii only
ii and iii only
Vysvětlení
properties of cathode rays among others are ;
- The cathode rays consist of negatively charged particles known as electrons.
- The cathode rays are deflected from their path by electric and magnetic fields.