![The value of the focal length of the lens is equal to the value of the image distance when rays are (A) Passing through optical center(B) Parallel to the principal axis.(C) Passing The value of the focal length of the lens is equal to the value of the image distance when rays are (A) Passing through optical center(B) Parallel to the principal axis.(C) Passing](https://www.vedantu.com/question-sets/5e1c89c0-8591-4536-944d-fabfebe37bbe5538049956207025842.png)
The value of the focal length of the lens is equal to the value of the image distance when rays are (A) Passing through optical center(B) Parallel to the principal axis.(C) Passing
![File:A diagram representing a convex mirror, which shows its focal point, focal length, center of curvature, and the principal axis.png - Wikimedia Commons File:A diagram representing a convex mirror, which shows its focal point, focal length, center of curvature, and the principal axis.png - Wikimedia Commons](https://upload.wikimedia.org/wikipedia/commons/b/b6/A_diagram_representing_a_convex_mirror%2C_which_shows_its_focal_point%2C_focal_length%2C_center_of_curvature%2C_and_the_principal_axis.png)
File:A diagram representing a convex mirror, which shows its focal point, focal length, center of curvature, and the principal axis.png - Wikimedia Commons
![Free Vector | Focus abstract concept vector illustration. training concentration, focus on success, defined business goal, orientation on target, center of attention, focal point, spotlight abstract metaphor. Free Vector | Focus abstract concept vector illustration. training concentration, focus on success, defined business goal, orientation on target, center of attention, focal point, spotlight abstract metaphor.](https://img.freepik.com/free-vector/focus-abstract-concept-vector-illustration-training-concentration-focus-success-defined-business-goal-orientation-target-center-attention-focal-point-spotlight-abstract-metaphor_335657-2893.jpg?w=2000)
Free Vector | Focus abstract concept vector illustration. training concentration, focus on success, defined business goal, orientation on target, center of attention, focal point, spotlight abstract metaphor.
![File:Object placed between focal point and centre of curvature - convex lens.png - Wikimedia Commons File:Object placed between focal point and centre of curvature - convex lens.png - Wikimedia Commons](https://upload.wikimedia.org/wikipedia/commons/b/b4/Object_placed_between_focal_point_and_centre_of_curvature_-_convex_lens.png)
File:Object placed between focal point and centre of curvature - convex lens.png - Wikimedia Commons
![Define the pole, the center of curvature, the radius of curvature, principal axis, aperture, focus, and focal length of a spherical mirror. Define the pole, the center of curvature, the radius of curvature, principal axis, aperture, focus, and focal length of a spherical mirror.](https://byjus-answer-creation.s3.amazonaws.com/uploads/7998Physics_628a621d7377b705f583dd39.jpg_img_upload_solution_2022-07-30%2007:20:52.594307.png)