Find the focal length of the lens shown in Fig . The radii of curvature of both the surfaces are equal to R.

Find the focal length of the lens shown in the figure. The radii of curvature of both the surfaces are equal to R

Find the focal length of the lens shown in the Fig..

Find the focal length of the lens shown in the Fig..

The effective focal length of the lens combination shown in Fig. is -60 cm . The radii of curvature of the curved surfaces of the plano-convex lenses are 12 cm each and refractive index of the material of the lens is 1.5 . The refractive index of the liquid is : .

Light is incident on the thin lens as shown in figure. The refractive index of the material of the lens is mu_(2) . The radii of curvature of both the surfaces are R. The refractive index of the medium of left side is mu_(1) , while that of right side is mu_(3) . What is the focal length of the lens?

Light is incident on a thin lents a shown in Fig.2.68.The radius of curvature for both the surfaces is R.Determine the focal length of this system. .

What is the focal length of a convex lens ( mu = 1.5) with radii of curvature R.