NEET Physics Stress & Strain MCQ Question
A steel wire of cross-sectional area 0.1 cm² is subjected to a tensile force of 2000 N. If the original length of the wire is 1 m, what is the elongation produced in the wire?
0.1 mm
1 mm
10 mm
0.01 mm
Correct Answer
Detailed Explanation
The elongation is calculated using the relation from the NCERT context, where a force of 2000 N is required to produce a 0.1% strain in a thin steel wire with a cross-sectional area of 0.1 cm². A 0.1% strain on a 1 m wire results in a 0.1 mm elongation.
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