| Date | May 2016 | Marks available | 3 | Reference code | 16M.3.SL.TZ0.9 |
| Level | Standard level | Paper | Paper 3 | Time zone | Time zone 0 |
| Command term | Construct | Question number | 9 | Adapted from | N/A |
Question
The diagram shows a diverging mirror.
Object O has a height of 2.0 cm and is 6.0 cm from the mirror surface. The focal length of the mirror is 4.0 cm and the radius of curvature is 8.0 cm.
Construct a ray diagram for object O. Label the image I.
[3]
a.
Estimate the linear magnification of the image.
[1]
b.
Outline the advantage of parabolic mirrors over spherical mirrors.
[3]
c.
Markscheme
one correct ray drawn
another correct ray
image located at intersection of rays, behind the mirror
Label I is required.
a.
≈ 0.4
b.
image is in better focus/sharper OR parabolic do not suffer from spherical aberration
parabolic mirrors reflect parallel rays through one point
whereas spherical mirrors reflect parallel rays through different points
Award 3rd mark even if implied in the answer.
c.
Examiners report
[N/A]
a.
[N/A]
b.
[N/A]
c.
