(a(i))[2]
State what is meant by ‘focal point’.
(a(ii))[1]
On Fig. 4.1, mark: • a point X on the principal axis to show a possible object position • a point E to show a possible position of the student’s eye.
(a(iii))[1]
Underline two words in the list that describe the image produced in (a)(ii). List: inverted, real, upright, virtual
(b(i))[2]
Calculate the speed of light in the glass.
(b(ii))[1]
State what happens to the wavelength of light as it passes into the lens.
(c)[3]
State the name of the problem and explain how a converging lens is used to correct it. You may draw a diagram.