1.B Direction: Read the sentences carefully. Write TRUE if the statement is correct and FALSE if it is not. Write your answer on the blank before the number. 6. Secondary ray, S-is a ray passing through the optical center but not parallel to the principal axis 7. Images formed in lenses are qualitatively described according to its location, orientation, size and type. 8. Orientation is when image formed by a lens that is on the same side as the object is a virtual image while image formed on the other side is a real image. 9. Location – images may fall at points identified along the principal axis such as at the focus F, at twice the focus 2F, between F and 2F, between F and vertex V, or beyond 2F. 10. Spherical lenses usually have two centers of curvature which are the centers of the intersecting spheres which form the lens ​