Physics-
General
Easy

Question

Copper of fixed volume 'V; is drawn into wire of length 'l'. When this wire is subjected to a constant force 'F', the extension produced in the wire is 'capital delta l'. Which of the following graphs is a straight line?

  1. capital delta l text  versus  end text fraction numerator 1 over denominator l end fraction    
  2. capital delta l text  versus  end text l to the power of 2 end exponent    
  3. capital delta l text  versus  end text fraction numerator 1 over denominator l to the power of 2 end exponent end fraction    
  4. capital delta l text  versus  end text l    

The correct answer is: capital delta l text  versus  end text l to the power of 2 end exponent


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