Jan tries to focus on the tip of her pencil as she brings it closer to her. she feels the strain on her eye as she does this. what she is feeling in her eye is due to the process called

Jan is feeling strain in her eye is due to the process called accommodation. It is the process by which the eyes adjust to uphold clear focus as visual targets get closer. A small muscle in each eye called the ciliary muscle changes the shape of the lens capsule, when we look at close objects.

Afine-grained igneous rock forms as a result of slow cooling.