When a rectangular bar of length l, breadth b and thickness t is subjected to an axial pull of P, then linear strain (εε) is given by (where E = Modulus of elasticity)
A. ε=PbtEε=PbtE
B. ε=btEPε=btEP
C. ε=btPEε=btPE
D. ε=PEbtε=PEbt
Answer: Option A
A bar when subjected to axial pull p
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