IIT-JEE Exam

A small massm is attached to amassless string whose other end is fixed at P as shown in the figure. Themass
is undergoing circular motion is the x-y plane with centre at O and constant angular speed . If the angular
momentum of the system, calculated about O and P are denoted by O L

and P L

respectively, then

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IIT-JEE Other Question
A bi-convex lens is formedwith two thin plano-convex lenses..Refractive index n of the first
lens is 1.5 and that of the second lens is 1.2. Both the curved surfaces are of the same radius of curvature R =
14 cm. For this bi-convex lens, for an object distance of 40 cm, the image distance will be Young’s double slit experiment is carried out by using green, red and blue light, one color at time. The fringe
widths recorded are G, R and B, respectively. Then
(A) G > B > R (B)B > G > R (C)R > B > G (D)R > G > B