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Two similar wires under the same load yield elongation of 0.1 mm and 0.05 mm respectively. If the area of cross-section of the first wire is 4 mm2, then the area of cross section of the second wire is
  • a)
    6mm2
  • b)
    8mm2
  • c)
    10mm2
  • d)
    12mm2
Correct answer is option 'B'. Can you explain this answer?
Most Upvoted Answer
Two similar wires under the same load yield elongation of 0.1 mm and 0...
Given, elongation of the first wire = 0.1 mm, area of cross-section of the first wire = 4 mm2
Elongation of the second wire = 0.05 mm
Let the area of cross-section of the second wire be A.

We know that the elongation of a wire is directly proportional to its length and the load applied and inversely proportional to its area of cross-section.

So, we can write:

Elongation of first wire/ Elongation of second wire = Area of cross-section of second wire/ Area of cross-section of first wire

0.1/0.05 = A/4

A = (0.1/0.05) x 4

A = 8 mm2

Therefore, the area of cross-section of the second wire is 8 mm2, which is given in option B.
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Community Answer
Two similar wires under the same load yield elongation of 0.1 mm and 0...
L=AY/FL

A1/A2=l1/l2⟹A2=A1​(0.1/0.05)=2A1​=2×4=8mm2
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Two similar wires under the same load yield elongation of 0.1 mm and 0.05 mm respectively. If the area of cross-section of the first wire is 4 mm2, then the area of cross section of the second wire isa)6mm2b)8mm2c)10mm2d)12mm2Correct answer is option 'B'. Can you explain this answer?
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Two similar wires under the same load yield elongation of 0.1 mm and 0.05 mm respectively. If the area of cross-section of the first wire is 4 mm2, then the area of cross section of the second wire isa)6mm2b)8mm2c)10mm2d)12mm2Correct answer is option 'B'. Can you explain this answer? for JEE 2024 is part of JEE preparation. The Question and answers have been prepared according to the JEE exam syllabus. Information about Two similar wires under the same load yield elongation of 0.1 mm and 0.05 mm respectively. If the area of cross-section of the first wire is 4 mm2, then the area of cross section of the second wire isa)6mm2b)8mm2c)10mm2d)12mm2Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for JEE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Two similar wires under the same load yield elongation of 0.1 mm and 0.05 mm respectively. If the area of cross-section of the first wire is 4 mm2, then the area of cross section of the second wire isa)6mm2b)8mm2c)10mm2d)12mm2Correct answer is option 'B'. Can you explain this answer?.
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