Two identical wires of iron and copper with their Young's modulus in the ratio 3 : 1 are suspended at same level. They are to be loaded so as to have same extension and hence level. Ratio of the weight is :

Options

A. `1:3`
B. `2:1`
C. `3:1`
D. `4:1`

Answer

C

Explanation

Y `prop` Weight applied
`therefore(Y_(1))/(Y_(2))=(W_(1))/(W_(2))rArr(W_(1))/(W_(2))=3/1`
So the correct choice is (c).