Copper of fixed volume 'v; is drawn into wire of length 'l. When this wore is subjected to a constant force 'F', the extension produced in the wire is 'Δl. Which of the following graphs is a straight line?
A
Δlversus1l
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B
Δlversusl2
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C
Δlversus1l2
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D
Δlversusl
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Solution
The correct option is BΔlversusl2 youngs modulusY=stressstrain=FA△ll=Fl△lA