(a(i)-1)[1]
On Fig. 3.2, draw a ray of light from the top A of the window, through the pin-hole and onto the screen.
(a(i)-2)[1]
On Fig. 3.2, draw a ray of light from the bottom B of the window, through the pin-hole and to the screen.
(a(i)-3)[1]
Measure the angle between the two light rays.
(a(ii))[1]
Explain how you measured the angle in the most accurate way possible.
(a(iii))[1]
Explain why the image of the window on the screen appears inverted.
(b)[1]
The pin-hole lets only a small amount of light into the camera. The student decides to make the pin-hole larger. On Fig. 3.3, draw two rays from A that enter the camera. Use your diagram to explain why the image is blurred.