Teaching HTET PGT Level 3 - 2024 Mock Test Physics Units, Dimensions and Measurements Accuracy, precision of instruments and errors in measurement
In order to determine the Young's Modulus of a wire of radius 0.2 cm (measured using a scale of least count = 0.001 cm) and length 1 m (measured using a scale of least count = 1 mm), a weight of mass 1 kg (measured using a scale of least count = 1 g) was hanged to get the elongation of 0.5 cm (measured using a scale of least count 0.001 cm). What will be the fractional error in the value of Young's Modulus determined by this experiment?
1
1.4%
2
0.9%
3
0.14%
4
9%