Hollow bead volume of 100 cm ^ 3 is equipped with a long tube with divisions. The volume of the tube between adjacent graduations of 0.2 cm ^ 3. The ball and the tube is air, which is separated from the ambient air mercury drop. At a temperature of 5 ° C drop of mercury standing at the division n = 20. In what limits can be changed in such a thermometer the temperature if the tube has 100 divisions? Thermal expansion of bulb and tube neglected.
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