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A brass wire of length 300cm when subje...

A brass wire of length `300cm` when subjected to a force `F` produces an elongation `"a"`. Another wire of twice the diameter and of same length and material, when subjeceted to the force `F` produces and elongation `b`. Then the value of `a//b` is

A

`1:1`

B

`4:1`

C

`1:3`

D

`1:2`

Text Solution

Verified by Experts

The correct Answer is:
B
`e = (Fl)/(AY) , e = (F xx l)/(pi r^(2) xx Y)`
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