In the determination of Young’s modulus ≤ft( Y = 4MLg/π l d² ) by using Searle’s method, a wire of length L = 2 m and diameter d = 0.5 mm is used. For a load M = 2.5 kg, an extension l = 0.25 mm in the length of the wire is observed. Quantities d and l are measured using a screw gauge and a micrometer, respectively. They have the same pitch of 0.5 mm. The number of divisions on their scale is 100. The contributions to the maximum probable error of the Y measurement [JEE Adv 2012 P1]

Question

Examsnet · Accepted Answer

Correct Answer is : due to the errors in the measurements of d and l are the same.

IIT JEE Advanced 2012 Paper 1