![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)
optics - Is focal length of Plano Concave lens $f=\cfrac{R}{\mu - 1}$ or $f=\cfrac{R}{1 - \mu}$? - Physics Stack Exchange
Diameter of plano - convex lens is 6 cm and thickness at the centre is 3 mm. If speed of light in material of lens is 2 × 10^8m/s , the focal
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 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
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