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Questions  >>  EAMCET  >>  Physics
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The two surfaces of a concave lens, made of glass of refractive index 1.5 have the same radii of curvature R. It is now immersed in a medium of refractive index 1.75 then the lens,

(a) becomes a convergent lens of focal length 3.5R (b) becomes a convergent lens of focal length 3.0R (c) changes as a divergent lens of focal length 3.5R (d) changes as a divergent lens of focal length 3.0R
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