Scholars and the plane mirror
Answers are for parents and teachers.
1
A person is 4 m from a mirror. How many metres between him and his image?
8
2
If the mirror turns by 35°, by how many degrees does the reflected ray turn?
70
3
F = 12 cm, f = 20 cm. How far is the object from the mirror in cm (1/d = 1/F − 1/f)?
30
4
Why is “AMBULANCE” written reversed on the front of the vehicle?
So it reads correctly in a driver’s rear-view mirror (left–right swapped).
5
Write one idea of Beruni or Ibn Sina about light in your own words.
Sample: Ibn Sina explained that we see because light from objects enters the eye.