JAMB Physics 2014 Objective — Question 16
Question 16 of 50 from the Joint Admissions and Matriculation Board (JAMB) Physics 2014 Objective paper, with the correct answer and a full explanation.
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A force of 500N is applied to a steel wire of cross-sectional area 0.2m². Calculate the tensile stress.
- A. 1.0×10² Nm⁻²
- B. 1.0×10³ Nm⁻²
- C. 2.5×10³ Nm⁻²Correct
- D. 2.5×10⁴ Nm⁻²
Explanation
Tensile stress = Force/Area = 500N/0.2m² = 2500Nm⁻² = 2.5×10³Nm⁻².
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