Answer:
Light when strikes mirror, it bounces off where as it transmits through a lens.
A mirror is glass with lustrous metal coated at its back. Light reflects off a mirror and image is formed behind it. A virtual and erect image is formed.
A lens is formed of two curved glass pieces. Light refracts through a lens as it passes from one medium to another i.e. it bends. Light appears to converge or diverges from focus. A real or virtual image may form.
Thus, we can say that light reflects from mirrors and refracts through lenses.