With a little algebra, and using the lens equation, we can solve for the image distance in terms of the object distance and focal length. What does the expression equal?

(a) Describe the lens equation and its components, including the object distance, image distance, and focal length.
(b) Explain the algebraic steps involved in solving for the image distance in terms of the object distance and focal length.
(c) Discuss the physical interpretation of the obtained expression and its significance in the context of optics.