Questions
The co-efficient of thermal expansion of a rod is temperature dependent and is given by the formula where a is a positive constant and T in If the length of the rod is l at temperature then the temperature at which the length will be is
detailed solution
Correct option is B
dl = lαdTdll=aTdT ∫l2ldll=∫0ToaT.dT ln ll2l= aT220To ln 2= aTo22 To=ln 4aTalk to our academic expert!
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