STANDARDPhysics-Elasticity
STANDARD Physics Young's Modulus MCQ Question
Type: MCQ-conceptual-Medium
A wire stretches by a certain amount under a load. If the load and radius both are increased to four times. The stretch caused in the wire is
A
l
B
l/2
C
l/3
D
l/4
Correct Answer
Option D
Detailed Explanation
Using Young's modulus formula, Y = (W/A) × (L/l), when both load and radius are increased to four times, the elongation becomes l' = l/4.
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