Physics · Oct / Nov 2016 · Paper 11 · Question 36

The diagram shows a cathode-ray tube. The dotted line shows the path of a beam of electrons. The beam hits the screen at point X and produces a bright spot. P and Q are horizontal plates on each side of the beam. Which change will move the bright spot to a different position on the screen?

1. AApply a voltage between metal plates P and Q.
2. BDecrease the positive voltage of the anode.
3. CIncrease the positive voltage of the anode.
4. DIncrease the voltage between the terminals of the cathode.

As printed in the paper