## anonymous 3 years ago Two plane mirrors are at right angle to each other. A man stands between them and combs his hair with his right hand. in how many of the image he will be seen using his right hand ? a-1 b-2 c-3 d-none of these

1. anonymous

@ghazi

2. anonymous

good question :)

3. anonymous

yes our lecture gave us a lot of them and ask us to find answers and tell why to learn much :) and i have searched a lot my last way is here :D

4. anonymous

and i just got one law from u :)

5. anonymous

see number of images formed = 3 by our last formula and from right hand there will be 2 not sure though

6. anonymous

if t was one mirror then one image wii appear and i will be seen using my right hand r ight ?

7. anonymous

no, if it would be one mirror we would have seen our left just stand in front of mirror and see

8. anonymous

ok if that when we apply that on the mirros there i found two of them is inverted so right hand appears right ?

9. anonymous

and one is just like the image in one mirror

10. anonymous

can i explain it like that ?

11. anonymous

can u draw it please

12. anonymous

yes you can but in objective question i don't think you need to draw or explain

13. anonymous

i knew we just didn't got the lesson yet that is all question the lecturer ask us to find and learn every possible information so i had to write explanation

14. anonymous

|dw:1351705086170:dw| which one of them is right or both are wrong ?

15. anonymous

|dw:1351705092375:dw| it will be just one image from right hand i am sure about that

16. anonymous

your is better :)

17. anonymous

the mirror in the left will show it from right , thanks :)

18. anonymous

then this one image. and one on right mirror shows left hand. then where is the third iamge

19. anonymous

the third image is at the intersection of mirror that will show from left

20. anonymous

then it will appear like one on the right mirror ok ?

21. anonymous

yes, so it will be one just one

22. anonymous

@experimentX @ghazi ok i guess i get the idea so the last answer is....?

23. anonymous

1

24. anonymous

ok what is the name of the formula u told me ?

25. experimentX

probably 2 ------------ since there will be 4 images ------------------------ 2 images = direct reflection = 180 turn 2 images = double reflection = 360 turn

26. anonymous

it's used for finding the number of images $\frac{ 360 }{ n }-1$ where n is the angle between two mirrors

27. anonymous

@experimentX but that formula will give that 3 images appears ?

28. experimentX

|dw:1351706800281:dw|

29. anonymous

i don't say that u r wrong am just confused and i want to understand this one

30. experimentX

well ... try imagining yourself. it's pretty late around here .. have to sleep.

31. anonymous

i got 2 mirrors, already did that and found three pics and 1 of them shows right hand

32. anonymous

@ghazi @experimentX thx for trying to help :)