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Question

The stress-strain diagram for two materials A and B are shown here. Select the correct option.


A
'A' has greater Young's modulus than 'B'
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B
'B' has greater Young's modulus than 'A'
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C
'A' & 'B' has same Young's modulus
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D
Cannot comment
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Solution

The correct option is A 'A' has greater Young's modulus than 'B'
Slope of stress - strain curve within the elastic limit gives the Young's modulus.
It can be clearly seen that
(slope)A > (slope)B
So, Young's modulus of A is greater than Young's modulus of B.

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