(a(i))[1]
State the name of the dashed line marked line Y in Fig. 6.1.
(a(ii))[1]
On Fig. 6.1, mark the angle of incidence for the red light ray at point P. Label it with the letter X.
(a(iii))[1]
At point P, the red light ray travels from the glass into the air. On Fig. 6.1, draw the route of the ray after it leaves the glass at point P.
(b(i))[1]
Use the details in Fig. 6.2 to work out the focal length of the lens.
(b(ii))[2]
State two properties of the image shown in Fig. 6.2.