The focal length of a convex lens is f an object is placed at a distance x from the first focal point .Find the ratio of the distance of the real image
![Focus and focal length of lens/first focus/second focus/class 12 Physics/#lens #lenses #focallength - YouTube Focus and focal length of lens/first focus/second focus/class 12 Physics/#lens #lenses #focallength - YouTube](https://i.ytimg.com/vi/FDVOXjPAWfY/sddefault.jpg?sqp=-oaymwEmCIAFEOAD8quKqQMa8AEB-AH-DoACuAiKAgwIABABGH8gPSgyMA8=&rs=AOn4CLBoUOte__BChb55hFS_GuUJVIiP7g)
Focus and focal length of lens/first focus/second focus/class 12 Physics/#lens #lenses #focallength - YouTube
![23-Zoom for the compressible dipole trap A first focal point is created... | Download Scientific Diagram 23-Zoom for the compressible dipole trap A first focal point is created... | Download Scientific Diagram](https://www.researchgate.net/publication/45347869/figure/fig28/AS:652958387675145@1532688819229/Zoom-for-the-compressible-dipole-trap-A-first-focal-point-is-created-by-a-lens-not-shown.png)
23-Zoom for the compressible dipole trap A first focal point is created... | Download Scientific Diagram
![First and Second Focal Plane Scopes – How They Differ - MTC Optics - Designed By Shooters - For Shooters First and Second Focal Plane Scopes – How They Differ - MTC Optics - Designed By Shooters - For Shooters](https://mtcoptics.com/wp-content/uploads/2021/11/First-Focal-Plane.jpg)