(a)[1]
State the speed of light in free space.
(b)[1]
State the colours that make up the visible spectrum.
(c(i))[1]
Determine the focal length of the diverging lens in Fig. 10.1.
(c(ii))[4]
On Fig. 10.1, draw rays from the tip of O to find the image and label it I.
(c(iii))[1]
Determine the height of the image formed.
(c(iv))[1]
Determine the magnification of the image formed.
(c(v))[2]
State two differences between a virtual image and a real image.
(c(vi))[1]
State one application of a diverging lens.
(d)[3]
Explain why the wavefronts alter direction as light enters glass, as shown in Fig. 10.2.