Question

Two wires of copper are given . Write A: length e and radius r, wire B: length e and radius 2r. If Young's modulus for wire A is Y_(A) and for wire B is Y_(B). Then-

Answer 1

Answer:

Assuming the question is to find the ratio of Y₁ and Y₂,

the answer is 4

Explanation:

According to the formula,

Y is proportional to length/ area = length/(radius)²

Y₁ =  e/r²

Y₂ = e/(2r)² = e/4r²

Hence,

Y₁/Y₂ =  4