Physics-Young's Modulus
NEET Physics Young's Modulus MCQ Question
Type: MCQ-numerical-Easy-Class 11
What is the minimum cross-sectional radius required for a steel rope to lift a load of 10 tonnes without exceeding the yield strength of mild steel?
A
1 cm
B
2 cm
C
0.5 cm
D
5 cm
Correct Answer
Option A
Detailed Explanation
The radius is calculated based on the cross-sectional area A ≥ W/σy = Mg/σy. For a 10-tonne load, the computation from the given NCERT context yields a radius of about 1 cm.
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