Fig. 7.1 depicts a box ABCD. Inside the box are two identical glass prisms, and only one is drawn. Light entering prism 1 undergoes total internal reflection in the glass.
(a(i))[2]
On Fig. 7.1, complete the path of the light ray through prism 1.
(a(ii))[2]
On Fig. 7.1, draw a second prism inside the dashed square, arranged so that the light reflects inside the glass and comes out of the box as shown. Complete the ray path.
(b)[2]
Select the statements that correctly describe the conditions needed for the light to undergo total internal reflection. Tick two boxes.
Worked solution & mark scheme
This 6-mark question has a full step-by-step worked solution and mark scheme. One marking point: “The ray goes straight through the first face to the sloping face” …