JEE Main 2022 Physics question
In an experiment of determine the Young's modulus of wire of a length exactly 1 m, the extension in the length of the wire is measured as 0.4 mm with an uncertainty of mm when a load of 1 kg is applied. The diameter of the wire is measured as 0.4 mm with an uncertainty of mm. The error in the measurement of Young's modulus is found to be . The value of x is . (Take g = 10 )
Answer: 2
Solution
with , so 0.01/0.4 + 0.02/0.4 = 0.04/0.4 = 1/10. Also $Y = (10
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