Find the focal length of a double-convex lens with `R_(1) = 15cm` and `R_(2) = -25CM`. The refractivwe index of the lens mateirla `n = 1.5`

Find the focal length of a double-convex lens with R_(1) = 15cm and R_(2) = -25CM . The refractive index of the lens material n = 1.5

Find the focal length of a plance-convex lens with R_(1) = 15cm and R_(2) = oo . The refractive index of the lens material n = 1.5

Find the focal length of a convavo-convex lens (Positive me menisus ) with R_(1) = 15cm , and R_(2) = 25cm . The refractive index of the lens material n = 1.5 m (1)/(f) = (1.5-1)((1)/(15)-(1)/(25)) = 0.5((10-6)/(150)), :. F = (300)/(4) = 75cm

Find the focal length of a concavo-convex lens (Positive +ve menisus ) with R_(1) = 15cm , and R_(2) = 25cm . The refractive index of the lens material n = 1.5 m (1)/(f) = (1.5-1)((1)/(15)-(1)/(25)) = 0.5((10-6)/(150)), :. F = (300)/(4) = 75cm

What is the focal length of a double convex lens for which radius of curvature of the surfaces is 40 cm and refractive index of the glass is 1.5?

The radii of curvatur of the faces of a double convex lens are 10cm and 15 cm. If focal length of the lens is 12 cm, find the refractive index of the material of the lens.