Physics-
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Easy

Question

Which one of the following is the Young’s modules (in N divided by m to the power of 2 end exponent right parenthesis for the wire having the stress-strain curve shown in the figure

  1. 24 cross times 10 to the power of 11 end exponent    
  2. 8.0 cross times 10 to the power of 11 end exponent    
  3. 10 cross times 10 to the power of 11 end exponent    
  4. 2.0 cross times 10 to the power of 11 end exponent    

The correct answer is: 2.0 cross times 10 to the power of 11 end exponent


    Young’s modulus is defined only in elastic region and
    Y equals fraction numerator S t r e s s over denominator S t r a i n end fraction equals fraction numerator 8 cross times 10 to the power of 7 end exponent over denominator 4 cross times 10 to the power of negative 4 end exponent end fraction equals 2 cross times 10 to the power of 11 end exponent N divided by m to the power of 2 end exponent

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