A plano convex lens of refractive index µ1 and focal length f1 is kept in contact with another plano concave lens of refractive index - Sarthaks eConnect | Largest Online Education Community
a plano convex lens is floating on a mercury with its plane surface in contact with mercury.Parallax is removed between a pin held at a height of 40cm above lens and image
![Physic 55.4: Optics- Multiple Lenses (4 of 12) The Triple Lens: The Equivalent Focal Length - YouTube Physic 55.4: Optics- Multiple Lenses (4 of 12) The Triple Lens: The Equivalent Focal Length - YouTube](https://i.ytimg.com/vi/w9tGbGVpM-8/hqdefault.jpg)
Physic 55.4: Optics- Multiple Lenses (4 of 12) The Triple Lens: The Equivalent Focal Length - YouTube
![A plano-convex lens (focal length `f_2`, refractive index`mu_(2)`, radius of curvature R) fits - YouTube A plano-convex lens (focal length `f_2`, refractive index`mu_(2)`, radius of curvature R) fits - YouTube](https://i.ytimg.com/vi/i1VhD4RaI4g/maxresdefault.jpg)
A plano-convex lens (focal length `f_2`, refractive index`mu_(2)`, radius of curvature R) fits - YouTube
A plano-convex lens is to have a focal length of 40cm. It is made of glass of an index of reflection 1.65. What radius of curvature is required? - Quora
![optics - Is focal length of Plano Concave lens $f=\cfrac{R}{\mu - 1}$ or $f=\cfrac{R}{1 - \mu}$? - Physics Stack Exchange optics - Is focal length of Plano Concave lens $f=\cfrac{R}{\mu - 1}$ or $f=\cfrac{R}{1 - \mu}$? - Physics Stack Exchange](https://i.stack.imgur.com/AsmAn.jpg)