Geometrical OpticsHard
Question
A bi-convex lens is formed with two thin plano-convex lenses as shown in the figure. Refractive index n ofthe first lens is 1.5 and that of the second lens is 1.2. Both the curved surface are of the same radius ofcurvature R = 14 cm. For this bi-convex lens, for an object distance of 40 cm, the image distance will be
Options
A.- 280.0 cm
B.40.0 cm
C.21.5 cm
D.13.3 cm
Solution
PT = (1.5 -1) 
f = +20 cm
∴ v = 40 cm
f = +20 cm
∴ v = 40 cm
Create a free account to view solution
View Solution FreeMore Geometrical Optics Questions
If the focal length of objective lens is increased then magnifying power of...Distance between an object and three times magnified real image is 40 cm . The focal length of the mirror used is $\_\_\...A student performed the experiment of determination of focal length of a concave mirror by u - v method using an optical...A person′s near point is 50 cm and his far point is 3 m. Power of the lenses he requires for- (i) reading and (ii)...The refractive index of the material of a prism is 2and the angle of the prism is 30o. One of the two refracting surface...