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rature13An aluminium plate fixed in a horizontal position has ahole of diameter 2 000 cm. A steel sphere of diameter2-005 em rests on this hole. All the lengths refer to atemperature of 10°C. The temperature of the entiresystem is slowly increased. At what temperature will theball fall down? Coefficient of linear expansion ofaluminium is 23 x 10C and that of steel is11 x 10 -C-fit in an aluminium frame. The

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