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107.

The mean distance between the atoms of iron is 3×10-10 m and interatomic force constant for iron is 7 N/m. The Young’s modulus of elasticity for iron is

(a) 2.33×105 N/m2                (b) 23.3×1010 N/m2

(c)  233×1010N/m2                (d) 2.33×1010 N/m2

Answer-d

(12)

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