Thin Lens Formula

 
6.4  Thin Lens Formula
 
  Lens equation relating \(f\,,u\,,v\)  
 

 \(\dfrac{1}{f}=\dfrac{1}{u}+\dfrac{1}{v}\), where f = focal length, u = object distance, v = image distance

 
     
 
  \(+\) \(-\)
\(f\) convex lens (converging) concave lens (diverging)
\(v\) real image virtual image (same side with object)