Fig. 6.1 presents a plan view of two cars nearing a road junction. A plane mirror is used so the drivers can observe the other vehicles. The diagram identifies plane mirror, ray of light from car 1, road, driver 1, car 1, driver 2, car 2, and tall building.
(a(i))[1]
On Fig. 6.1, draw the normal to the plane mirror clearly at the point where this ray meets the plane mirror. Put the label N on the normal.
(a(ii))[1]
On Fig. 6.1, draw the reflected ray of light carefully.
(a(iii))[1]
State the law used in your answer to (a)(ii).
(a(iv))[1]
Can each driver see the other car? Explain your answer.
(b)[3]
(i) On Fig. 6.2, extend the ray’s route into the block.
(ii) On Fig. 6.2, label the angle of incidence $i$ and the angle of refraction $r$ clearly.
Worked solution & mark scheme
This 7-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Normal line drawn at 90^{\circ} to mirror” …