Which of the following is the Young Modulus of steel?
Correct answer: A. 20 x 10^9N/m2
- A. 20 x 10^9N/m2
- B. 3.9 x 10^-9N/m2
- C. 2 x 10^11N/m2
- D. 1.5 x 10^9N/m2
Explanation
The young modulus of steel is 20×1010 Pa which is 20×109N/m2.
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About Young's Modulus and Stress-Strain
Stress and strain describe how a solid deforms under an applied force, while Young's modulus is the ratio of tensile stress to tensile strain within the elastic limit. The topic includes elastic and plastic behaviour, Hooke's law, the stress strain graph and the difference between stiffness, strength and breaking stress.
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