Which of the following is not the property of cathode rays?
1. | It produces a heating effect. |
2. | It does not deflect in the electric field. |
3. | It casts a shadow. |
4. | It produces fluorescence. |
1. | cathode rays are streams of negatively charged ions. |
2. | all the mass of an atom is essentially in the nucleus. |
3. | the \(\frac{e}{m}\) of electrons is much greater than the \(\frac{e}{m}\) of protons. |
4. | the \(\frac{e}{m}\) ratio of the cathode ray particles changes when a different gas is placed in the discharge tube. |