Question

If the image formed by the objective lens is not in the same plane with cross-hairs any movement of the eye is likely to cause an apparent movement of the image with respect to the cross-hairs. This is called (a) Parallax (b) Focusing (c) Aplanatism (d) Achromatism​

Answer 1

Answer:

kcgkoydpufotdpycofdotcogcpugpus85f06