Convex Surface

The radius of curvature of the convex surface of a planoconvex lens is 12 cm and its refractive index 1.5. If the plane face of the lens is silvered, then the distance from the lens at which parallel rays incident on its convex surface converge is

There is a plano-convex lens whose radius of curvature for convex surface is 2.5 cm. Thickness of the lens is 9 cm. When object is placed at a certain distance from the convex surface then image is formed on the plane surface of the lens which serves as screen. What should be the magnification in this case? Refractive index is 1.5.

The convex surface of a thin concavo-convex lens of glass of R.l. 1.5 has a radius of curvature 20 cm. The concave surface has a radius of curvature 60 cm. The convex side is silvered and placed horizontally. Q Where should a pin be placed on the axis such that its image is formed on the same point.

A concavo-convex glass (index=1.5) lens has radii of curvatures 60cm and 40cm, respectively. Its convex surface is silvered , and its placed on a horizontal table with concave surface up. The concave surface is then filled with a liquid of index 2.0. The combination behaves like

The curvature radii of a concavo-convex glass lens are 20cm and 60cm .th convex surface of the lens is silvered .With the lens horizotnal ,the concave surface is filled with water.The focal length of the effective mirror is ( mu of glass= 1.5,mu of water= 4//3

Calculate the positions of the principle planes and focal points of a thick convex-concave glass lens if the curvature radius of the convex surface is equal to R_(1) = 10.0 cm and of the concave surface to R_(2) = 5.0 cm and the lens thickness is d = 3.0 cm .

At what thickness will a thick convex-cancave glass lens in air (a) serve as a telescope provided the curvature radius of its convex surface is DeltaR = 1.5 cm greater than that of its concave surface? (b) have the optical equal to -1.0 D if the curvature radii of its convex and concave surfaces are equal to 10.0 and 7.5 cm respectively ?

The concave and convex surface of a thin concavo-convex lens of refractive index 1.5 has radius of curvature 50 cm and 10 cm respectively. The concave side is slivered then if the equivalent focal length of the silvered lends is -5x cm then find x.

A concave-convex lens is placed on a horizontal table with its convex surface polished to make it reflecting as shown in figure. If radii of curvature of its two surfaces are 30 cm and 60 cm respectively find the position on its principal axis where a point object should be placed to obtain its image on itself. (mu_("lens") = (3)/(2)) [24]