Combination of Thin Lenses in Contact

Chapter-9|Ray Optics and Optical Instrument|NCERT 12th Physics:

Combination of Thin Lenses in Contact:

Let two lenses A and B of focal lengths f₁ and f₂ placed in contact with each other. An object is placed at a point O beyond the focus of the first lens A. The first lens produces an image at I’ (virtual image), which serves as a virtual object for the second lens B, producing the final image at I.

Since, the lenses are thin, So we can assume the optical centre as P.


Combination of Thin Lenses in Contact

Combination of Thin Lenses in Contact

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