Question

There are two wires of same material. Their radii and lengths are both in the ratio `1:2` If the extensions produced are equal, the ratio of the loads is
A. `1:2`
B. `2:1`
C. `1:4`
D. `4:1`

Answer 1

Correct Answer - A
`F = (Yae)/(l), (F_(1))/(F_(2)) = (r_(1)^(2))/(r_(2)^(2)) xx (l_(2))/(l_(1))`