What number of images between two flat mirrors? What happens to the x-ray when filming the person holding the piece of metal in his pocket?

n =360/x ; n= no of image ,; x = angle between the mirrors .; i .e if x =0 that mean the parallel mirrors ,n =360 /0 =unlimited of images .you can try this at home , stand and hold tow mirrors in your hands and see what number of image you can see .                                                                                       if want to take image by x-ray and you hold piece of metal in your pocket the operation faild bequase the piece of metal absorbtion the energy bequase it have high density

one image , it wont pass the metal.