Question

what is the formula of measuring the number or images formed if 2 mirrors will be placed in front of each other ?

Answer 1

If an object is placed between two plane mirrors inclined at an angle Ф,then the number of images formed is

n=$\frac{360}{teta} -1$

Answer 2

IF the angle between the two mirrors is teta, then the formula is 
 No. of images = (360/teta) - 1