Concave Surface

The concave surface of a thin concavo -convex lens of glass of refractive index 1.5 has a radius of curvature of 20cm .The concave surface has a radius of curvature of 60cm .The covnex side is silvered and placed on a horizontal surface as shown in the figure. The combination behaves like

The concave surface of a thin concavo -convex lens of glass of refractive index 1.5 has a radius of curvature of 20cm .The concave surface has a radius of curvature of 60cm .The covnex side is silvered and placed on a horizontal surface as shown in the figure. The focal length of the combibnation has the magnitude.

The concave surface of a thin concavo-convex lens of index 1.5 has radius of curvature 50cm and 10cm respectively.The concave side is silvered andplaced on a horizontal surface as shown Focal length of silvered lens is:

The concave surface of a thin concavo -convex lens of glass of refractive index 1.5 has a radius of curvature of 20cm .The concave surface has a radius of curvature of 60cm .The covnex side is silvered and placed on a horizontal surface as shown in the figure. A small object is placed on the principal axis of the combination,at a distance of 30cm in front of the mirror.The magnification of the image is

The concave surface of a thin concavo-convex lens of index 1.5 has radius of curvature 50cm and 10cm respectively.The concave side is silvered andplaced on a horizontal surface as shown Focal length of lens(without silvered)is:

The concave surface of a thin concavo-convex lens of index 1.5 has radius of curvature 50cm and 10cm respectively.The concave side is silvered andplaced on a horizontal surface as shown The object distance at which its image coincides with itself is

What curvature must be given to the bounding concave surface of refracting medium (mu = 3//2) for a virtual image at 40 cm of an object in this medium at a distance of 60 cm . The adjoining medium is air (mu = 1) .

A denser medium of refractive index 1.5 has a concave surface of radius of curvature 12 cm. An object is situated in the denser medium at a distance of 9 cm from the pole. Locate the image due to refraction in air.

The convex surface of a thin concave-convex lens of glass of refractive index 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 on a horizontal surface as shown in figure. (a) Where should a pin be placed on the axis so that its image is formed at the same place ? (b) If the concave part is filled with water (mu = 4/3), find the distance through which the pin should be moved so that the image of the pin again coincides with the pin.

A curved surface of radius R separates two medium of refractive indices mu_(1) "and" mu_(2) as shown in figures A and B . Identity the correct statement(s) related to the formation of images of a real object O placed at x from the pole of the concave surface, as shown in figure B