A 1m long metal wire of cross-sectional area 10 –6 m 2 is fixed at one end from a rigid support and a weight W is hanging at its other end. The graph shows the observed extension of length Δ λ of the wire as a function of W. Young’s modulus of material of the wire in SI units is
Text Solution
Verified by ExpertsThe correct answer is:
C
Δ λ = 
The graph is straight line passing through origin the slope of which is 
.
∴ Slope = 
∴ Y = 
= 
= 2.0 × 10 11 N/m 2
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