The longitudinal extension of any elastic material is very small. In order to have an appreciable change, the material must be in the form of
Text Solution
Verified by ExpertsThe correct answer is:
C
We have, 
or 
… (i)
As per the information given in the question, the longitudinal extension of any material of wire is small.
It means that if 
is small, then A will be large, which indicates that in order to have an appreciable change, the material must be in the form of a long thin wire.
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