Geometrical OpticsHard
Question
A long sighted person has a minimum distance of distinct vision of 50 cm. He wants to reduce it to 25 cm. He should use a -
Options
A.Concave lens of focal length 50 cm
B.Convex lens of focal length 25 cm
C.Convex lens of focal length 50 cm
D.Concave lens of focal length 25 cm
More Geometrical Optics Questions
A double convex lens, made of a material of refractive index μ1, is placed inside two liquids of refractive indices...A plano convex lens fits exactly into a plano concave lens. Their plane surfaces are parallel to each other. If lenses a...A ray of light a liquid of refractive index 1.4 approaches the boundary surface between the liquid and air at an angle o...Which of the following is used in optical fibres ?...A convex lens produces a real image m times the size of the object. What will be the distance of the object from the len...