A student in the laboratory measures thickness of a wire using screw gauge. The readings are 1.22 mm, 1.23 mm, 1.19 mm and 1.20 mm. The percentage error is x1 2 1%. The value of x is___

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Correct answer: 150. (150) X= 1.22 mm+1.23 mm+1.19 mm+1.20 mm4 X=1.21 mm x= 0.01+0.02+0.02+0.014= 0.064=0.015 Percentage error = 0.0151.21 x 100 X= 150

$A student in the laboratory measures thickness of a wire using screw gauge. The readings are 1.22 mm, 1.23 mm, 1.19 mm and 1.20 mm. The percentage error is \frac{x}{121} . The value of x is___$

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