![Physics 55.4 Optics- Multiple Lenses (3 of 12) The Double Lens: The Equivalent Focal Length - YouTube Physics 55.4 Optics- Multiple Lenses (3 of 12) The Double Lens: The Equivalent Focal Length - YouTube](https://i.ytimg.com/vi/GxemspUuOSU/hqdefault.jpg)
Physics 55.4 Optics- Multiple Lenses (3 of 12) The Double Lens: The Equivalent Focal Length - YouTube
![Derive an expression for the focal length of the combination of two thin lenses when they are SEPERATED by - Physics - Ray Optics And Optical Instruments - 3170522 | Meritnation.com Derive an expression for the focal length of the combination of two thin lenses when they are SEPERATED by - Physics - Ray Optics And Optical Instruments - 3170522 | Meritnation.com](https://s3mn.mnimgs.com/img/shared/discuss_editlive/2241653/2012_12_09_10_26_01/image44271489620755630.jpg)
Derive an expression for the focal length of the combination of two thin lenses when they are SEPERATED by - Physics - Ray Optics And Optical Instruments - 3170522 | Meritnation.com
![Derivation of Equivalent Focal Length of Combination of two lens separated by distance #kamaldheerya - YouTube Derivation of Equivalent Focal Length of Combination of two lens separated by distance #kamaldheerya - YouTube](https://i.ytimg.com/vi/JTOSQLL93pY/mqdefault.jpg)
Derivation of Equivalent Focal Length of Combination of two lens separated by distance #kamaldheerya - YouTube
Derive an expression for equivalent focal length of two thin lenses kept in contact. - Sarthaks eConnect | Largest Online Education Community
Derive an expression for the effective (equivalent) focal length of two thin lenses in contact. - Sarthaks eConnect | Largest Online Education Community
![Deduce the equivalent focal length of two convex lenses of focal lengthsf1andf2 when placed in contact Deduce the equivalent focal length of two convex lenses of focal lengthsf1andf2 when placed in contact](https://content-grail-production.s3.amazonaws.com/quetsion-media/e737a3d3-e547-4aab-9d2b-b28bb1a5bd63-image.png)
Deduce the equivalent focal length of two convex lenses of focal lengthsf1andf2 when placed in contact
![When two thin lenses of focal lengths f1 and f2 are kept in contact, prove that their combined focal length f is given by - Zigya When two thin lenses of focal lengths f1 and f2 are kept in contact, prove that their combined focal length f is given by - Zigya](https://www.zigya.com/application/zrc/images/qvar/IPHEN12114088-1.png)
When two thin lenses of focal lengths f1 and f2 are kept in contact, prove that their combined focal length f is given by - Zigya
What do you mean by an equivalent lens? The system of two equivalent lenses are placed at a distance then derive the equation of equivalent focus and power.
![Derive the expression for Equivalent focal length of two thin lenses placed at distance d Its really very urgent - Physics - Ray Optics And Optical Instruments - 11121337 | Meritnation.com Derive the expression for Equivalent focal length of two thin lenses placed at distance d Its really very urgent - Physics - Ray Optics And Optical Instruments - 11121337 | Meritnation.com](https://s3mn.mnimgs.com/img/shared/content_ck_images/ana_qa_image_58c6f40b4e66c.jpeg)