(a) Define electric potential at a point. (b) Two positively charged metal spheres A and B are situated in a vacuum

Q#23  ( Past Exam Paper – June 2015 Paper 42 Q5 ) (a)  Define  electric potenti… Read more (a) Define electric potential at a point. (b) Two positively charged metal spheres A and B are situated in a vacuum

(a) For a progressive wave, state what is meant by (i) the period, (ii) the wavelength. (b) Fig. 4.1 shows the variation with time t

Q#19 ( Past Exam Paper – June 2018 Paper 21 Q4 ) (a)  For a progressive wave, s… Read more (a) For a progressive wave, state what is meant by (i) the period, (ii) the wavelength. (b) Fig. 4.1 shows the variation with time t

(a) Distinguish between an X-ray image of a body structure and a CT scan. X-ray image: CT scan:

Q#7 ( Past Exam Paper – June 2014 Paper 42 Q11 ) (a)  Distinguish between an X-… Read more (a) Distinguish between an X-ray image of a body structure and a CT scan. X-ray image: CT scan:

A graph of nucleon number A against proton number Z is shown in Fig. 7.1. The graph shows a cross (labelled P) that represents a nucleus P.

Q#15 ( Past Exam Paper – November 2018 Paper 23 Q7 ) A graph of nucleon number … Read more A graph of nucleon number A against proton number Z is shown in Fig. 7.1. The graph shows a cross (labelled P) that represents a nucleus P.

The diagrams show four pairs of waves. In each case the displacement y measured at a fixed point is plotted against time t.

Q#26 ( Past Exam Paper – November 2017 Paper 13 Q30 ) The diagrams show four pa… Read more The diagrams show four pairs of waves. In each case the displacement y measured at a fixed point is plotted against time t.