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If the ratio of diameters,lengths and Yo...

If the ratio of diameters,lengths and Young’s modulus of steel and copper wires shown in the figure are p,q and s respectively then the corresponding ratio of increase in their lengths would be

A

`(7q)/((5sp))`

B

`(5q)/((7sp^2))`

C

`(7q)/((5sp^2))`

D

`(2q)/(5sp)`

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