Physics · 2016
JEE Main · 10 April 2016, Shift 1 · Q26
A thin 1 m long rod has a radius of 5 mm. A force of 50 π kN is applied at one end to determine its Young's modulus. Assume that the force is exactly…
A thin $\displaystyle 1$ m long rod has a radius of $\displaystyle 5$ mm. A force of $\displaystyle 50 \pi \mathrm{kN}$ is applied at one end to determine its Young's modulus. Assume that the force is exactly known. If the least count in the measurement of all lengths is $\displaystyle 0.01$ mm, which of the following statements is false ?
Official answer
(3)
The maximum value of $\displaystyle Y$ that can be determined is $\displaystyle 10^{14} \mathrm{~N} / \mathrm{m}^2$.
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JEE Main 2016 Physics question, with the answer from NTA’s final answer key. Where our answers come from.