When viewing an object through a prism, the object is displaced towards its ________.

When light passes through a prism, it is refracted — or bent — due to the change in speed as it moves from one medium to another (such as from air to glass). The geometry of the prism causes different wavelengths of light to refract at slightly different angles, leading to the phenomenon known as chromatic dispersion, but it's the displacement of the image that relates to the apex of the prism.

The apex is the point where the two sides of the prism meet at the top, and as light enters and exits the prism, objects observed through it appear to shift in position. Specifically, the displacement occurs due to the light bending at the apex. Thus, when looking through the prism, the image of the object appears to move towards the apex of the prism, creating a visual effect where the object appears shifted from its original position toward the apex.

This understanding of prism behavior is fundamental to optics and helps explain why glasses and optical devices using prisms can adjust and correct vision effectively.