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Q 3)    During an experiment using Searle's method, a 4 m long wire gets extended by 6 mm with 0.02 mm uncertainty when a load of 2 kg is suspended at its lower end. What will be the value of Young's modulus obtained from this given data?
(Take the measured diameter of the wire to be 2.4 mm with 0.01 mm uncertainty and g = 9.8 m/s²).

A)    2.89 ± 0.04 GPa

B)     2.89 ± 0.03 GPa

C)    0.56 ± 0.04 GPa

D)    0.56 ± 0.02 GPa