A thin concavo-convex lens ha two surface of radii of curvature R and 2R. The mateial of the lens has a refractive index mu. When kept in air, the focal length of the lens

A thin concavo-convex lens ha two surface of radii of curvature R and

1.	A thin concavo-convex lens ha two surface of radii of curvature R and 2R. The mateial of the lens has a refractive index mu. When kept in air, the focal length of the lens
Answer» wil depend on the DIRECTION from which light is incident on it will be the same, IRRESPECTIVE of the direction from which light is incident on it will be equal to `R/(mu-1)` will be equal to `(2R)/(mu-1)` ANSWER :B::D

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A thin concavo-convex lens ha two surface of radii of curvature R and 2R. The mateial of the lens has a refractive index mu. When kept in air, the focal length of the lens

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