Gravitation Question 220

Question: The ratio of diameters of two wires of same material is n: 1. The length of each wire is 4 m. On applying the same load, the increases in the length of the thin wire will be (n>) $

Options:

A) [n2times]

B) [ntimes]

C) [2ntimes]

D) [(2n+1)times]

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Answer:

Correct Answer: A

Solution:

  • [Y=F/aΔl/l=FlaΔl] Or [Y=Fl×4πD2×Δl] or [Δl1D2] or [Δl2Δl1=D12D22=n11]


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