Optics problem!Classical Mechanics Level 2
Three lenses having powers 10 D, -10 D and 10 D are placed on a common principal axis. All are separated by 5 cm. Where is the apparent focus of this lens system?
Distance from the Focus to be given in reference to the last lens. Eg: 2 cm away from the last lens (only enter the number, in cm).
All are of the same material and are placed in air.