GCSE level optics questions
Q9. A student investigated how the nature of the image depends on the position of the object in front of a large converging lens. The diagram shows one position for the object.
(a) Use a ruler to complete a ray diagram to show how the image of the object is formed.
![](diagram9ANS.png)
Award marks as follows:
- Ray through pole of lens is undiverted.
![](../../../../graphics/symbols/nuclides/ticksmall.png)
- Ray parallel to the principal axis
passes through the principal focus after refraction by the lens.![](../../../../graphics/symbols/nuclides/ticksmall.png)
- Image point should be joined by a perpendicular line to the principal axis with an arrow head on the top of it.
![](../../../../graphics/symbols/nuclides/ticksmall.png)
(4 marks)
(b) Describe the nature of this image relative to the object.
It is inverted,
magnified
and real
(3 max)
(2 marks)
(Total 6 marks)