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1.
Coefficient of isothermal elasticity 
and coefficient of adiabatic elasticity 
are related by 
and coefficient of adiabatic elasticity are related by
2.
The length of an elastic string is a metre when the tension is 44 N, and b metre when the tension is 5 N. The length in metre when the tension is 9 N, is
3.
The following four wires of length L and radius r are made of the same material. Which of these will have the largest extension, when the same tension is applied?