a) List two properties of cathode rays.
(b) Explain how the intensity and energy of cathode rays may be increased
Explanation
(a) Properties of cathode rays:
Cathode rays
-
- are negatively charged.
- travel in straight line in field free space.
- are deflected by electric/magnetic field.
- possess(kinetic) energy.
- possess momentum.
(b)(i) The intensity of cathode rays may be increased by raising the temperature of the cathode/increasing the current through the heater.
(ii) The energy of cathode rays may be increased by raising the potential difference between the anode and the cathode/the anode potential.