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Two wires that are made up of two different materials whose specific resistance are in the ratio 2 : 3, length 3 : 4 and area 4 : 5. The ratio of their resistances is

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The correct Answer is:
`00.50`
Resistance `=rho l/A`
`:.(R_(1))/(R_(2))=(rho_(1))/(rho_(2))xx(l_(1))/(l_(2))xx(A_(2))/(A_(1))=2/3xx3/5xx5/4=2/4`
`=1/2=0.5`
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