NAME INDEX NUMBER
SCHOOL DATE
REFLECTION AT CURVED SURFACES
1. 1994 Q1a P2
(a)Draw a ray diagram to show what is meant by
(i) The principal focus and
(ii) The focal length of a concave mirror. (3 marks)
2. 1995 Q36 P1
Explain with the aid of a labelled ray diagram the wide field of view of a convex
mirror (2 marks)
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3. 1995 Q3a P2
(a) An object O is placed in front of convex mirror as shown in figure 2
(i) Draw to scale a ray diagram to show the position of the image (5 marks)
(ii) Determine the magnification (3 marks)
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4. 1996 Q22 P1
A lady holds a large concave of focal length 1 m, 80 cm from her face, state
two characteristics of her image in the mirror (2 marks)
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5. 1997 Q26 P1
Figure 9 shows two parallel rays incident on a concave mirror. F is the focal
point of the mirror.
Sketch on the same diagram the path of the rays after striking the mirror
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6. 2000 Q23 P1
Fig. 12 shows a ray of light incident on a convex mirror.
Using a suitable construction on the same diagram determine the radius of curvature
of the mirror.
7. 2000 Q1 P2
a) i) State one application of each of the following.
Convex mirror-
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Parabolic mirror –
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ii) Fig. 1, which is drawn to a scale of 1:5, represents an object O and its
image ‘I’ formed by a concave mirror.
By drawing suitable rays, locate and mark on the figure the position of
the principal focus ‘F’ of the mirror. Determine the focal length f.
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b) The graph in Fig. 2 shows the variation of magnification, M with image
distance, V for a concave mirror.
Determine:
i) The object position when the image position is 45cm
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ii) The focal length of the mirror.
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8. 2001 Q20 P1
Fig. 13 shows a point object O placed in front of a concave mirror.
Draw appropriate rays to locate the image of the object.
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9. 2003 Q29 P1
Figure 16 (a) and (b) show a convex mirror and a plane mirror of equal
aperture.
Figure 16
By sketching a pair of incident and reflected rays for each (a) and (b) show how
the convex mirror provides to the eye, a wider field of view than the plane
mirror.
10. 2004 Q23 P1
Figure 12 shows a parabolic surface with a source of light placed at its focal
point F
Draw rays to show reflection from the surface when rays from the source
strike the surface at points ABC and D.
11. 2005 Q22 P1
Fig. 12 shows a vertical object, O, placed in front of a convex mirror.
Fig 12
On the same diagram draw the appropriate rays and locate the image formed
(3 marks)
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12. 2010 Q5 P2
Figure 4, shows a bright electric lamp placed behind a screen which has a hole
covered with wire gauze. A concave mirror of focal length 25cm is placed in
front of the screen. The position of the mirror is adjusted until a sharp image of
the gauze is formed on the screen.
Determine the distance between the mirror and the screen.
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13. 2012 Q17 P2
Figure 16, shows a graph of magnification against object distance, for an object
placed in front of a lens of a focal length 20cm.
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Using the graph
i. State the effect on the size of the image when the object distance is increased from
25cm (1 mark)
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ii. Determine the distance between the object and the lens when the image is the
same size as the object (2 marks)
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iii. Determine the image distance when the object distance is 25cm (3 marks)
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b) Figure 17 shows an object O placed in front of a converging mirror of focal length
15 cm.
Draw on the figure a ray diagram to locate the image formed (3 marks)
c) State why parabolic reflectors are used in car headlights. (1 mark)
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