Light rays from the left of a convex lens parallel to the axis are refracted through the lens and pass through the focal point.
(Light rays from the left of a convex lens parallel to the axis; are refracted; ) (Light rays from the left of a convex lens parallel to the axis; pass; through the focal point)
Light rays from the left of a convex lens parallel to the axis Light rays from the left of a convex lens parallel to the axis
are refracted pass
through the focal point