Thin lens (Part-2)|Power of lens| combination of lens| silvered lens

Power Of Combination Of Lens

The power of a converging lens is 4.5 D and that of a diverging lens is 3 D. The power of this combination of lenses placed close together is:

Thin lens (Part-1) |Types of thin lens|Nature of lens|Lens displacememt method

Image Formation From Concave Lens|Questions|Power Of Lens|Combination Of Lens|Questions

Examples on lens and combination OF lens and mirror

Thin Lens Formula

A convex lens of focal length 40 cm a concave lens of focal length 40 and a concave lens of focal length 15 cm are placed in contact. The power of this combination of are placed in contact. The power of this combination in diopters is

A convex lens of power 2 D and a concave lens of focal length 40cm are kept in contact, find (a) Power of combination , (b) Equivalent focal length

An eye specialist prescribes spectacles having combination of convex lens of focal length 40cm in contact with a concave lens of focal length 25cm. The power of this lens combination in diopters is