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The Young's modulus of brass and steel a...

The Young's modulus of brass and steel are respectively `1.0xx10^(11)N//m^(2)` and `2.0xx10^(11)N//m^(2)` . A brass wire and steel wire of the same length are extended by `1mm` each under the same force. If radii of brass and steel wires are `R_(B)` and `R_(S)` respectively,. then

A

`R_(S)=sqrt2R_(B)`

B

R_(S)=R_(B)/sqrt2`

C

`R_(S)=4R_(B)`

D

`R_(S)=R_(B)/4`

Text Solution

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The correct Answer is:
B
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