A ray reflected successively from two plane mirrors inclined at a certain angle `(lt 90^(@))` undergoes a deviation of `300^(@)` . The number of images observable are:

A ray reflected successively from two plane mirrors incline at a certain angle undergoes a deviation of 240^@ . Then the number of images observable is

A ray reflected successively from two plane mirrors inclined at a certain angle undergoes a deviation of 240^@ . The number of observable images is

Two plane mirrors are inclined at an angle of 60^(@) . An object is placed between the mirrors. The number of images formed by the two mirrors is

A ray gets successively reflected from two mirrors inclined at an angle of 40^(@) . If the angle of incidence on the first mirror is 60^(@) , then the net deviation of this ray is -