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 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 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 radius of curvature of the convex surface of a plan-convex lens, whose focal length is 0.3 m and the refractive index of the material of the lens is 1.5.

Find the radius of curvature of the convex surface of a plano-convex lens, whose focal length is 0.3 m and the refractive index of the material of the lens is 1.5.

The radius of curvature of the convex face of a plano convex lens is 12cm and the refractive index of the material of the lends 1.5. Then, the focal length of the lens is

The radius of curvature of the curved surface of a plano-convex lens is 20 cm . If the refractive index of the material of the lens be 1.5 , it will

Find the focal length of plano-convex lens of material having refractive index of 1.5. Radius of curvature of convex surface is 10 cm.