Lens||Power in Medium and Air OF Mirror||Power OF Lens in Medium||Combination OF Lens

Power Of Combination Of Lens

Rules For Obtaining Images Formed By Concave Lenses |Lens Formula|Magnification Produced By Lenses |Practice Exercise|Power Of A Lens|Power Of A Combination Of Lenses|Summary

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

Examples on lens and combination OF lens and mirror

Power OF Lens/ Mirror|| Cutting OF Lens|| Polishing OF Lens|| Discussion OF DPP - 14

a) What do you understand by the power of a lens? Name one factor on which the power of a lens depends. b) What is the unit of power of a lens? Define the unit of power of a lens. c) A combination of lenses for a camera two converging lenses of focal length 20 cm and 40 cm and a diverging lens of focal length 50 cm. Find the power and focal length of the combination.

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

The power of a convex lens is 2 dioptres. Its power is to be reduced to 1.5 dioptres, by putting another lens in combination with it. Which of the following lens will serve the purpose ?