Physics-Young's Modulus
NEET Physics Young's Modulus MCQ Question
Type: MCQ-diagram based-Medium-Class 11
A diagram shows a steel rope being used in a crane to lift a load of 10 tonnes. The radius of the rope is labeled as 1 cm. Which property of the steel rope is crucial to determine its minimum necessary cross-sectional area to ensure it does not deform permanently?
A
Yield strength of mild steel
B
Density of mild steel
C
Length of the steel rope
D
Weight of the steel rope
Correct Answer
Option A
Detailed Explanation
The yield strength of mild steel is used to calculate the minimum cross-sectional area of the rope to prevent permanent deformation, as shown by the formula A ≥ W/σ_y.
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