How many images will be formed if two mirrors are fitted on adjacent wall and one mirror on ceiling? a- 5 b-7 c- 11 d-2 and why?

Question

How many images will be formed if two mirrors are fitted on adjacent wall and one mirror on ceiling? a- 5   b-7  c- 11  d-2  and why?

anonymous · Answer

I think 7

anonymous · Answer

The only thing that matters for finding the number of images produced, when there are two mirrors, is the angle between the mirrors. The formula needed is given by

n=[360∘/θ]−1

n=3:)

anonymous · Answer

I thought that the answer is 3 but it do not exist in the choices

anonymous · Answer

No, isn't. The answer is 7.
3 due to the two adjacent walls at 90o
 and 4 images on the ceiling.

Hint. Remember this is not only two adjacent walls

anonymous · Answer

why there is four images on the ceiling?

anonymous · Answer

these 3 imgs formed by the combnation of the 2 adjacent walls in addition with the object itself will act as objects for the ceiling mirror

anonymous · Answer

thank you