Lens -Classification||Behaviour OF Lens in Different Medium||General Method to Solve Problem OF Lens|| Discussion OF Sheet- Section-2 (part-4 Q.12 to 23)

Discussion of Sheet Dipole (Q 71 to 97)||Section-2 Part-1 (Q 1 to 20)

Focal Length OF Lens||Lens In Medium||Lens Ray Diagram||Discussion OF Sheet Refraction By Spherical Surface Question -42 to 47

Any Set as Fundamental Set OF Physical Quantities||Discussion OF Sheet Part-4 (1||2||3||4||6||12||15)

A lens is made of three thin different mediums. Radius of curvature and refractive index of each medium is shown iin Figure., Surface AB is straight. An object is placed at some distance from the lens by which a real image is formed on the screen placed at a distance of 10cm from the lens. Find a. The distance of the object from the lens. b. A slab of thiskness 1.5cm and refractive index 1.5 is introduced between the image and the lens. Find the new position of the object so that image is again formed on the screen. c. Find the position of the image when same slabe is placed on the other side of the lens {as in part (b)}

A light ray parallel to the principal axis is incident (as shown in the figure) on a thin planoconvex lens with radius of curvature of its curved part equal to 10 cm. Assuming that the refractive index of the material of the lens is 4//3 and medium on both sides of the lens is air, find the distance of the point from the lens where this ray meets the principal axis. Find your answer in the form (X)/(7)cm and fill value of X .

When an object is placed on the principal axis of a convex lens at two different positins, it produces the images with magnifications +2 and -4 respectively. How many times more away from the lens the image will be formed in the second position as compared to the first postion?