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A copper wire and an aluminium wire has...

A copper wire and an aluminium wire has lenghts in the ratio `3:2` diameter in the ratio `2:3` and froce applied in the ratio `4:5` find the ratio of the increase in length of the two wires
`TY_(AT) = 7xx10^(10) N//m^(2), Y_(Cu) = 11xx10^(10) N//m^(2)`

A

`110,89`

B

`180:110`

C

`189:110`

D

`80:11`

Text Solution

Verified by Experts

The correct Answer is:
C
`Y = (Fl)/(Ae), (e_(1))/(e_(2)) = (F_(1) l_(1) r_(2)^(2) Y_(2))/(F_(2) l_(2) r_(1)^(2) Y_(1))`
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