A slightly conical wire of length L and end radii r 1 and r 2 is stretched by two forces…
Physics · JEE Advanced · NTA Exams — Properties of Solids and Liquids
A slightly conical wire of length L and end radii r1 and r2 is stretched by two forces F, F applied parallel to length in opposite directions and normal to end faces. If Y denotes the Young’s modulus, then extension produced is
- \(\frac{F L}{\pi r_{1}^{2} Y}\)
- \(\frac{F L}{\pi r_{1} Y}\)
- \(\frac{F L}{\pi r_{1} r_{2} Y}\)
- \(\frac{F L Y}{\pi r_{1} r_{2}}\)
Answer
(C) F L r_ 1 r_ 2 Y
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