$(a)$ What is "power of accommodation of the eye"?
$(b)$ What happens to the image distance when the object being viewed is moved away from the eye?

(N/A) The "power of accommodation of the eye" is the ability of the eye lens to adjust its focal length to focus objects at varying distances clearly on the retina.
$(b)$ The image distance in the eye remains constant. It is equal to the distance between the eye lens and the retina, which does not change regardless of the object's distance.