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[" 1.Two sheets of thickness "d" and "2d...

[" 1.Two sheets of thickness "d" and "2d" and "],[" same area are touching each other on "],[" their face.Temperature "T_(A),T_(B),T_(C)],[" shown are in geometric progression "],[" with common ratio "r=2." Then ratio "],[" of thermal conductivity of thinner "],[" and thicker sheet are: "],[[" (a) "1," (b) "2],[" (c) "3," (d) "4]]

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