A copper rod of 88 cm and an aluminium rod of unknown length have their increase in length independent of increase in temperature. The length of aluminium rod is [NEET 2019]
Text Solution
Verified by ExpertsThe correct answer is:
C
Due to change in temperature, the thermal strain produced in a rod of length L is given by
where 
original length of rod and
coefficient of linear expansion of solid rod
is same for both copper and aluminium, Therefore,
… (i)
Substituting the given values in Eq. (i), we get
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