A thermal tap used in certain appartus consists of a silica rod which fits tightly inside an alumium tube whose internal diameter is 8mm at 0°C.When the temperature is raised ,the fits is no longer exact.Calculate what change in temperature is necessary to produce a channel whose cross-sectional is equal to that of the tube of 1mm internal diameter.solve it with ckear diagram.
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A ‘thermal tap’ used in a certain apparatus consists of a silica rod which fits tightly inside an aluminium tube whose internal diameter is 8mm at
0
0C. When the temperature is raised, the fit is no longer exact. Calculate
what change in temperature is necessary to produce a channel whose
cross-section is equal to that of a tube of 1mm internal diameter. (linear
expansivity of silica = 8X10-6
/K and linear expansivity of aluminium =
26X10-6
/K )
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