(a(i))[1]
State what this effect is called.
(a(ii))[1]
State what causes this effect.
(b(i))[1]
On Fig. 5.1, indicate the two principal focuses and label each one with the letter F.
(b(ii))[3]
On Fig. 5.1, draw rays from the top of object O to locate the image. Draw and label the image.
(b(iii))[1]
Determine the image height.
(b(iv))[1]
State and explain if the image is real or virtual.