Home/
Competitive Exams/
NEET/
Physics/
Mechanical Properties of Solids/
Question 6308
NEET Physics · Medium

Mechanical Properties of Solids: Young's Modulus MCQ

Solve this quality-checked NEET multiple-choice question, then review the correct answer and explanation.

Timer-based practiceDetailed answer reviewMobile-friendly flow
Young's ModulusMediumQuestion 6308

Question

Steel wire (L=1 m, r=0.5 mm, Y=2×10¹¹ Pa) loaded with 100 N. Extension:
  1. A
    0.636 mm
    Correct
  2. B
    0.318 mm
  3. C
    1.27 mm
  4. D
    6.36 mm

Correct answer

0.636 mm

Explanation

ΔL = FL/AY = 100×1/(π×0.25×10⁻⁶×2×10¹¹) = 100/(π×5×10⁴) ≈ 100/157080 ≈ 0.636 mm.

Review Mechanical Properties of Solids notesStart timed chapter practice