Sagot :
2.5d lens is the kind of lens for him p=1/0.4m(f=40cm)=3.5 D the person thus uses a convex lens... suffering from hypermetropia.⠀⠀
[tex]\large\purple{\boxed{{\colorbox{black}{Hope \: \: this \: \: helps}}}}[/tex]
2.5d lens is the kind of lens for him p=1/0.4m(f=40cm)=3.5 D the person thus uses a convex lens... suffering from hypermetropia.⠀⠀
[tex]\large\purple{\boxed{{\colorbox{black}{Hope \: \: this \: \: helps}}}}[/tex]