The view in the figure is from above a plane mirror suspended by a thread connected to the centre of the mirror at point A. A scale is located 0.75m (the distance from point A to point P) to the right of the centre of the mirror, Initially, the plane of the mirror is parallel to the side of the scale; and the angle of incidence of light ray which is directed at the centre of the mirror is 30. A small torque applied to the thread causes the mirror to turn 11.5 away from its initial position. The reflected ray then intersects the scale at point Q. The distance from point P to point Q on the scale is A 1.00m B. 0.56m 1.02m 0.86m