JEE Main 2012 Physics question
A structural steel rod has a radius of 10 mm and length of 1.0 m. A 100kN force stretches it along its length. Young's modulus of structural steel is . The percentage strain is about
Answer: (1)
Solution
Strain \frac{F}{AY}\frac{10^5}{π(10^{-2})^2×2×10^{11}}$ =
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