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(Solved): Two converging lenses are identical in shape, i.e. they have the same two radii of curvature, R_(1) ...



Two converging lenses are identical in shape, i.e. they have the same two radii of curvature,

R_(1)

and

R_(2)

, but they are made from different materials. Lens

A

is made from a material with refractive index 1.74 , lens

B

from a material with refractive index

n

. Lens A is used in a magnifying glass with maximal angular magnification 2.25. Lens B is used in a magnifying glass with minimal angular magnification 1.15. What is the refractive index

n

of lens

B

? (Assume that the near point is at

d=25cm

.) A) 1.52 B) 1.60 C) 1.68 D) 1.80 E) 1.89

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