Q .     Two wires `A` and `B` are of the same materials. Their lengths are in the ratio `1:2` and the diameters are in the ratio `2:1`, When stretched by force `F_A` and `F_B` respectively they get equal increase in their lengths. Then the ratio `\frac{F_A}{F_B}` should be:

MHCET 2011
A

`1:2`

B

`1:1`

C

`2:1`

D

`8:1`

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