Question 7
(7) The diagram (Figure 5) shows an object OO’ placed in front of a converging lens. The image is formed on the line XY.
(i) Draw three rays leaving O (the arrow head at the top of the object) and passing through the lens. Show clearly the position of the image. [1 mark]
(ii) Draw the image formed by the lens and give two characteristics of the image. [1.5 marks]
(iii) The object is now moved closer to the lens so that it is less than a distance of one focal length from lens. Describe the image [1.5 marks]
(iv) Name one optical device that uses this concept. [1 mark]
(i) Draw three rays leaving O (the arrow head at the top of the object) and passing through the lens. Show clearly the position of the image. [1 mark]
(ii) Draw the image formed by the lens and give two characteristics of the image. [1.5 marks]
(iii) The object is now moved closer to the lens so that it is less than a distance of one focal length from lens. Describe the image [1.5 marks]
(iv) Name one optical device that uses this concept. [1 mark]