66.From ray diagram show the (1) image formation by concave lens for the object at focus. (2) image formation by concave lens for the virtual object at focus
Real images versus virtual images - convex lens
Lens Formula For Convex Lens (Real and Virtual) | Class Eleven Physics
Concave lens – Object at different distances from the lens
We know that a concave lens always forms a virtual and diminished image, then we use this lens in myopic eye, then we must be able to see the image is diminished,