Steel is preferred for making springs over copper because
A
Y of steel is more than that of copper
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B
Steel is cheaper
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C
Y of copper is more than steel
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D
Steel is less likely to be oxidised
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Solution
The correct option is AY of steel is more than that of copper More the value of Youngs Modulus more the elasticity and since steel has greater Youngs Modulus it is being chosen.