Paper 2 H - SAMPLE SET 1 Q3
3) A student investigated how the magnification produced by a convex lens varies with the distance (d) between the object and the lens.
The student used the apparatus shown in Figure 7.
The student used the apparatus shown in Figure 7.
3.1) The student measured the magnification produced by the lens by measuring the image height in centimetres.
Explain why the image height in centimetres was the same as the magnification. [2 marks]
The data recorded by the student is given in Table 1.
Explain why the image height in centimetres was the same as the magnification. [2 marks]
The data recorded by the student is given in Table 1.
3.2) It would be difficult to obtain accurate magnification values for distances greater than 60 cm.
Suggest one change that could be made so that accurate magnification values could be obtained for distances greater than 60 cm. [1 mark]
The graph in Figure 8 is incomplete.
Suggest one change that could be made so that accurate magnification values could be obtained for distances greater than 60 cm. [1 mark]
The graph in Figure 8 is incomplete.
3.3) Complete the graph in Figure 8 by plotting the missing data and then drawing a line of best fit. [2 marks]
3.4) How many times bigger is the image when the object is 35cm from the lens compared to when the object is 55 cm from the lens? [2 marks]
3.5) During the investigation the student also measured the distance between the lens and the image.
Table 2 gives both of the distances measured and the magnification.
3.4) How many times bigger is the image when the object is 35cm from the lens compared to when the object is 55 cm from the lens? [2 marks]
3.5) During the investigation the student also measured the distance between the lens and the image.
Table 2 gives both of the distances measured and the magnification.
Consider the data in Table 2.
Give a second way that the student could have determined the magnification of the object.
Justify your answer with a calculation. [2 marks]
3.6) Complete the ray diagram in Figure 9 to show how the convex lens produces the image of a close object.
Use an arrow to represent the image. [3 marks]
Give a second way that the student could have determined the magnification of the object.
Justify your answer with a calculation. [2 marks]
3.6) Complete the ray diagram in Figure 9 to show how the convex lens produces the image of a close object.
Use an arrow to represent the image. [3 marks]
(Total for Question 3 = 12 marks)