Browse by Stream
QnA
Home
QnA
Go To Your Study Dashboard

Get Answers to all your Questions

header-bg qa
  • Home
  • Engineering
  • The following four wires of length L and radius r are made of the same material. Which of these will have the largest extension, when the same tension is applied?<strong

The following four wires of length L and radius r are made of the same material. Which of these will have the largest extension, when the same tension is applied?

Option: 1

L = 400cm, r = 0.8mm

 


Option: 2

L = 300cm, r = 0.6mm


Option: 3

L = 200cm, r = 0.4mm

 


Option: 4

L = 100cm, r = 0.2mm


Answers (1)

best_answer

Young's modulus, Y=\frac{F}{A} \times \frac{L}{l}

y=\frac{F}{\pi r^2} \times \frac{L}{l} \Rightarrow Extension, l \propto \frac{L}{r^2}

Option D has the largest extension when the same tension is applied.

Posted by

Pankaj Sanodiya

View full answer

JEE Main high-scoring chapters and topics

Study 40% syllabus and score up to 100% marks in JEE

Similar Questions

Latest Question