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Two wires are made of the same material and have the same volume. The first wire has cross-sectional area A and the second wire has cross-sectional area 3A. If the length of the first wire is increased by Dl on applying a force F, how much force is needed to stretch the second wire by the same amount?
  • a)
    9F
  • b)
    6F
  • c)
    4F
  • d)
    F
Correct answer is option 'A'. Can you explain this answer?
Most Upvoted Answer
Two wires are made of the same material and have the same volume. The ...
Young’s modulus, 
Since initial volume of wires are same and their areas of cross sections are A and 3A so lengths are 3l and l respectively. For wire 1,

For wire 1,

For wire 2, let F ′ force is applied



From eqns (i) and (ii),

⇒ F' = 9F
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Two wires are made of the same material and have the same volume. The first wire has cross-sectional area A and the second wire has cross-sectional area 3A. If the length of the first wire is increased by Dl on applying a force F, how much force is needed to stretch the second wire by the same amount?a)9Fb)6Fc)4Fd)FCorrect answer is option 'A'. Can you explain this answer? for NEET 2026 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about Two wires are made of the same material and have the same volume. The first wire has cross-sectional area A and the second wire has cross-sectional area 3A. If the length of the first wire is increased by Dl on applying a force F, how much force is needed to stretch the second wire by the same amount?a)9Fb)6Fc)4Fd)FCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for NEET 2026 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Two wires are made of the same material and have the same volume. The first wire has cross-sectional area A and the second wire has cross-sectional area 3A. If the length of the first wire is increased by Dl on applying a force F, how much force is needed to stretch the second wire by the same amount?a)9Fb)6Fc)4Fd)FCorrect answer is option 'A'. Can you explain this answer?.
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