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JEE Main Physics Class 11 Properties of Solids and Liquids Questions Part 1 Questions

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Question : 8

Total: 100

A thin 1m long rod has a radius of 5mm. A force of 50πkN 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 0.01mm, which of the following statements is false ?

[Online April 10, 2016]

The maximum value of Y that can be determined is 2×1014N∕m2
ΔY
Y
gets minimum contribution from the uncertainty in the length
ΔY
Y
gets its maximum contribution from the uncertainty in strain
The figure of merit is the largest for the length of the rod.

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