Question 17 : In practical experiment inloving the use of optical pins, parallax is reduced or removed if on slightly displacing one’s eye from side to side

Question 17 : In practical experiment inloving the use of optical pins, parallax is reduced or removed if on slightly displacing one’s eye from side to side

 the object and image are coincident and remain stationary

 the object and image are coincident and move together in the same direction

 the object and image are not coincident but move together in same directions

 the object and image move in opposite directions relative to each other