Question

why are multiple images seen when two planes mirrors are placed at an angle between them.what would be the number of images seen when two plane are placed inclined at an angle o 36 degree to each other

Answer 1

the answer will be 9

Answer 2

Here n=number of images
x=angle between the two mirrors

The no. of images formed when the angle is x :

n=(360/x)-1

For example,

x=60

Therefore, n=(360/60)-1

n=6–1

n=5

NOTE:

WHEN n IS AN EVEN NO. THEN THE NO. OF IMAGES IS FORMED n-1