GCSE level optics questions
The diagram shows the image IC formed by a lens, of an object OB a long way from it. The points F mark the focal points of the lens.
(a) Describe, either by writing below or drawing on the diagram, how the nature, size and position of the image changes:
(i) when the object OB is moved towards the focal point F.
(ii) when the object OB is moved past F to a point nearer the lens than the focal point.
(b) Explain how a converging lens in a camera is used to produce sharp images on the film when the object is a long distance away from the camera, and when it is close to the camera.
(Total 9 marks)